18957008 has 20 divisors (see below), whose sum is σ = 41976480. Its totient is φ = 8124384.

The previous prime is 18956983. The next prime is 18957013. The reversal of 18957008 is 80075981.

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, 84518 + ... + 84741.

It is an arithmetic number, because the mean of its divisors is an integer number (2098824).

Almost surely, 2^18957008 is an apocalyptic number.

It is an amenable number.

18957008 is an abundant number, since it is smaller than the sum of its proper divisors (23019472).

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

18957008 is a wasteful number, since it uses less digits than its factorization.

18957008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 169274 (or 169268 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 38.

The square root of 18957008 is about 4353.9646300814. The cubic root of 18957008 is about 266.6387498553.

The spelling of 18957008 in words is "eighteen million, nine hundred fifty-seven thousand, eight".