Yes, Satan is a 'god' the 'god' of this world of badness according to 2nd Corinthians 4:4
Satan is the ruler of this world - John 14:30; Ephesians 2:2; 1st John 5:19
Remember 'god/ God' is a title and Not a proper name for the God of the Bible YHWH.
Since Satan came from the divine heavens then in that sense he is divine but Not in holiness.
Sinner Satan will be destroyed by Jesus - Hebrews 2:14 B
Please refrain from quoting Paul .. in relation to anything of the spirit .. as Paul was not of the spirit .. Paul is not "The Logos" .. who spoke Gods word through the Holy Spirit .. so let us not usurp the position of Jesus .. substituting the words of Paul . nor is the Devil of Paul the same as our friend .. the Tester of souls from Job .. "The Adversary" of Job .. and as you correctly point out .. indeed this is the title of this "Son of God"
and yes .. we are told Ha Satan is a God -- and quite a powerful God at that ...showing off all kinds of Godly powers in Job. and here you go completely off the rails talking about Ha Satan being destroyed by Jesus.
Jesus never say anything about destroying Ha Satan .. the God who put Jesus through his Paces during the ritual Trial .. At the behest of the almighty however, it must be said. Who did you think gave the tester of souls his Job title ? who allowed him to be Chief God over all the earth.
You need to stop heeding the words not of the spirit --- Ha Satan is not against God in Job ... he is shown as specifically subordinat to his Father . not acting outside of the will of his by his Father.
So yes ... Ha Satan is a God .. but this demonic God of Paul you are talking about is not the Ha Satan of Job --- Just as the God "Jealous" is not the God of Jesus.
Let us hearken not to the hands of man .. written into the Bible - for these are the hands of the decepticon.. When Jesus says to Peter - Get behind me Satan .. he is referring to the adversary of Job.. and his tester. .. Telling Peter .. I have already been through the tester of souls testing me . don't need that from you .. "Thats behind me already" heh heh .. so funny how folks get to mixed up over a simple passage .. well .. simple once one knows the Bible from the perspective of those that wrote the story - as opposed to the perspective of some Trinitarian in the 21st century.