18513364 has 6 divisors (see below), whose sum is σ = 32398394. Its totient is φ = 9256680.

The previous prime is 18513337. The next prime is 18513371. The reversal of 18513364 is 46331581.

It can be written as a sum of positive squares in only one way, i.e., 16744464 + 1768900 = 4092^2 + 1330^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2314167 + ... + 2314174.

Almost surely, 2^18513364 is an apocalyptic number.

It is an amenable number.

18513364 is a deficient number, since it is larger than the sum of its proper divisors (13885030).

18513364 is a wasteful number, since it uses less digits than its factorization.

18513364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4628345 (or 4628343 counting only the distinct ones).

The product of its digits is 8640, while the sum is 31.

The square root of 18513364 is about 4302.7158865070. The cubic root of 18513364 is about 264.5422928525.

The spelling of 18513364 in words is "eighteen million, five hundred thirteen thousand, three hundred sixty-four".