13091864 has 16 divisors (see below), whose sum is σ = 24964200. Its totient is φ = 6434752.

The previous prime is 13091849. The next prime is 13091873. The reversal of 13091864 is 46819031.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 13091864.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13397 + ... + 14340.

Almost surely, 2^13091864 is an apocalyptic number.

It is an amenable number.

13091864 is a deficient number, since it is larger than the sum of its proper divisors (11872336).

13091864 is a wasteful number, since it uses less digits than its factorization.

13091864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27802 (or 27798 counting only the distinct ones).

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

The square root of 13091864 is about 3618.2680939919. The cubic root of 13091864 is about 235.6860231451.

The spelling of 13091864 in words is "thirteen million, ninety-one thousand, eight hundred sixty-four".