91038164 has 12 divisors (see below), whose sum is σ = 182076384. Its totient is φ = 39016344.

The previous prime is 91038161. The next prime is 91038173. The reversal of 91038164 is 46183019.

It is a happy number.

91038164 is an admirable number.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 91038164.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91038161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1625654 + ... + 1625709.

It is an arithmetic number, because the mean of its divisors is an integer number (15173032).

Almost surely, 2^91038164 is an apocalyptic number.

It is an amenable number.

91038164 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

91038164 is a wasteful number, since it uses less digits than its factorization.

91038164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3251374 (or 3251372 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 91038164 is about 9541.3921416112. The cubic root of 91038164 is about 449.8570146542.

The spelling of 91038164 in words is "ninety-one million, thirty-eight thousand, one hundred sixty-four".