I'm sure you're new, but this topic has been addressed quite often, here's a link, the satan's library is full of information. Always check here first.
https://www.dropbox.com/s/kac0cn02sjazma7/Satan_Is_The_Divine_Name_-_HP_Mageson.pdf?dl=1
https://dawn666blacksun.angelfire.com/Satan_is_God__The_Word_of_Life.pdf
Magesons been debunked, but "his" later works were Maxine's and HP HC's anyways.
I'm sure you're familiar with the mantra satanama. It's a word of power, something used to bring about changes in the astral from the physical or vice versa. Even if the ancients didnt call him Satan, the "name" was alive. He was called a great many things though, shiva, sotenkang, melek taus, odin, dionysus, the native americans had a word for him in blanking on, etc etc, I mean it's Satan were talking about, the guy was kinda well known. The name Satan has more to do with the spiritual power from the sounds and less to do with being simple moniker. Satanama is one of the strongest and most ubiquitous "power words" per se. I know the different parts correspond to parts of the soul, what specifically though at this current moment I could not tell you. I'm not all too keen on pdf hunting right now and also it's your job as a Satanist to seek out the info yourself, but the good news is that all the information you seek is right here:
https://www.satanslibrary.org/Pdf_Library.html