91361816 has 32 divisors (see below), whose sum is σ = 210836640. Its totient is φ = 36142848.

The previous prime is 91361807. The next prime is 91361821. The reversal of 91361816 is 61816319.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62021 + ... + 63476.

It is an arithmetic number, because the mean of its divisors is an integer number (6588645).

Almost surely, 2^91361816 is an apocalyptic number.

It is an amenable number.

91361816 is an abundant number, since it is smaller than the sum of its proper divisors (119474824).

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

91361816 is a wasteful number, since it uses less digits than its factorization.

91361816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125523 (or 125519 counting only the distinct ones).

The product of its digits is 7776, while the sum is 35.

The square root of 91361816 is about 9558.3375123501. The cubic root of 91361816 is about 450.3894833738.

The spelling of 91361816 in words is "ninety-one million, three hundred sixty-one thousand, eight hundred sixteen".