18623936 has 14 divisors (see below), whose sum is σ = 36957000. Its totient is φ = 9311936.

The previous prime is 18623911. The next prime is 18623977. The reversal of 18623936 is 63932681.

It is a self number, because there is not a number n which added to its sum of digits gives 18623936.

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, 145436 + ... + 145563.

Almost surely, 2^18623936 is an apocalyptic number.

18623936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18623936 is a deficient number, since it is larger than the sum of its proper divisors (18333064).

18623936 is an equidigital number, since it uses as much as digits as its factorization.

18623936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291011 (or 291001 counting only the distinct ones).

The product of its digits is 46656, while the sum is 38.

The square root of 18623936 is about 4315.5458519172. The cubic root of 18623936 is about 265.0679118696.

The spelling of 18623936 in words is "eighteen million, six hundred twenty-three thousand, nine hundred thirty-six".