91931300004 has 24 divisors (see below), whose sum is σ = 214532847648. Its totient is φ = 30639983680.

The previous prime is 91931300003. The next prime is 91931300089. The reversal of 91931300004 is 40000313919.

It is not an unprimeable number, because it can be changed into a prime (91931300003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 370737 + ... + 566840.

It is an arithmetic number, because the mean of its divisors is an integer number (8938868652).

Almost surely, 2^91931300004 is an apocalyptic number.

It is an amenable number.

91931300004 is an abundant number, since it is smaller than the sum of its proper divisors (122601547644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

91931300004 is a wasteful number, since it uses less digits than its factorization.

91931300004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945755 (or 945753 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 30.

The spelling of 91931300004 in words is "ninety-one billion, nine hundred thirty-one million, three hundred thousand, four".