They would have to be to hear all the prayers that are being given in their names.
NO ONE IS OMNIPOTENT BUT GOD!!!!!!!!>
No they wouldn't. At least I don't see how that would require omnipotence. I can see that it would require more power than I have, but there is plenty of space between me and omnipotence.
BTW, I addressed that quesiton in my first response to your post.