18934664 has 16 divisors (see below), whose sum is σ = 40574400. Its totient is φ = 8114832.

The previous prime is 18934649. The next prime is 18934673. The reversal of 18934664 is 46643981.

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, 169004 + ... + 169115.

It is an arithmetic number, because the mean of its divisors is an integer number (2535900).

Almost surely, 2^18934664 is an apocalyptic number.

18934664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18934664 is an abundant number, since it is smaller than the sum of its proper divisors (21639736).

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

18934664 is a wasteful number, since it uses less digits than its factorization.

18934664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338132 (or 338128 counting only the distinct ones).

The product of its digits is 124416, while the sum is 41.

The square root of 18934664 is about 4351.3979362959. The cubic root of 18934664 is about 266.5339492365.

The spelling of 18934664 in words is "eighteen million, nine hundred thirty-four thousand, six hundred sixty-four".