91803916 has 6 divisors (see below), whose sum is σ = 160656860. Its totient is φ = 45901956.

The previous prime is 91803911. The next prime is 91803917. The reversal of 91803916 is 61930819.

It is not an unprimeable number, because it can be changed into a prime (91803911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11475486 + ... + 11475493.

Almost surely, 2^91803916 is an apocalyptic number.

It is an amenable number.

91803916 is a deficient number, since it is larger than the sum of its proper divisors (68852944).

91803916 is a wasteful number, since it uses less digits than its factorization.

91803916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22950983 (or 22950981 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 37.

The square root of 91803916 is about 9581.4360092838. The cubic root of 91803916 is about 451.1147932235.

The spelling of 91803916 in words is "ninety-one million, eight hundred three thousand, nine hundred sixteen".