You could also ask "What would a god be without believers?" (because not all gods are human-like).
Lots off people all over the world believe in one or more gods. But what if (and I say if because it isn't very likely) all human beings on this planet would stop believing in there god (or gods)?
What or who would a god than be? Would a god than be a funny drawing on a wall or just some guy in a book? Perhaps the new neighbours, the mailman or the birds in your garden were ones your god, until you stopped believing.
Think, philosophies and give your opinion about this question!
I'm curious who or what a god would be without believers according to you.