18796985 has 32 divisors (see below), whose sum is σ = 25608960. Its totient is φ = 13160448.

The previous prime is 18796979. The next prime is 18796993. The reversal of 18796985 is 58969781.

It is not a de Polignac number, because 18796985 - 2²⁴ = 2019769 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 166289 + ... + 166401.

It is an arithmetic number, because the mean of its divisors is an integer number (800280).

Almost surely, 2^18796985 is an apocalyptic number.

It is an amenable number.

18796985 is a deficient number, since it is larger than the sum of its proper divisors (6811975).

18796985 is a wasteful number, since it uses less digits than its factorization.

18796985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257.

The product of its digits is 1088640, while the sum is 53.

The square root of 18796985 is about 4335.5489848461. The cubic root of 18796985 is about 265.8863639209.

The spelling of 18796985 in words is "eighteen million, seven hundred ninety-six thousand, nine hundred eighty-five".