18612912 has 40 divisors (see below), whose sum is σ = 48312880. Its totient is φ = 6174720.

The previous prime is 18612899. The next prime is 18612929. The reversal of 18612912 is 21921681.

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 18612912.

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, 10764 + ... + 12372.

It is an arithmetic number, because the mean of its divisors is an integer number (1207822).

Almost surely, 2^18612912 is an apocalyptic number.

18612912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18612912 is an abundant number, since it is smaller than the sum of its proper divisors (29699968).

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

18612912 is a wasteful number, since it uses less digits than its factorization.

18612912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1861 (or 1855 counting only the distinct ones).

The product of its digits is 1728, while the sum is 30.

The square root of 18612912 is about 4314.2684200221. The cubic root of 18612912 is about 265.0156013124.

The spelling of 18612912 in words is "eighteen million, six hundred twelve thousand, nine hundred twelve".