Yes, as does believing in multiple gods. As already pointed out of those who are polytheists, you are a henotheistic one.
So again what other gods do you believe in?
It depends in what you mean by 'belief (in)', NS. I believe that Manchester United, West Ham, Grimsby, Swansea City, Cambridge Utd, Spurs, Arsenal and sundry other football clubs exist, but I 'believe in' (follow) Oxford United.
To answer the second question, I believe that there are a variety of powers in existence which go by the names of Hanuman, Krishna, Allah, Buddha, etc - but I do not follow them or believe that they have ultimate power.