18818056 has 16 divisors (see below), whose sum is σ = 37141200. Its totient is φ = 8913744.

The previous prime is 18818029. The next prime is 18818069. The reversal of 18818056 is 65081881.

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, 61750 + ... + 62053.

It is an arithmetic number, because the mean of its divisors is an integer number (2321325).

Almost surely, 2^18818056 is an apocalyptic number.

It is an amenable number.

18818056 is a deficient number, since it is larger than the sum of its proper divisors (18323144).

18818056 is a wasteful number, since it uses less digits than its factorization.

18818056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123828 (or 123824 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 37.

The square root of 18818056 is about 4337.9783309740. The cubic root of 18818056 is about 265.9856777108.

The spelling of 18818056 in words is "eighteen million, eight hundred eighteen thousand, fifty-six".