18850864 has 20 divisors (see below), whose sum is σ = 36815104. Its totient is φ = 9350208.

The previous prime is 18850849. The next prime is 18850873. The reversal of 18850864 is 46805881.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2607 + ... + 6670.

Almost surely, 2^18850864 is an apocalyptic number.

It is an amenable number.

18850864 is a deficient number, since it is larger than the sum of its proper divisors (17964240).

18850864 is a wasteful number, since it uses less digits than its factorization.

18850864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9412 (or 9406 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 40.

The square root of 18850864 is about 4341.7581692213. The cubic root of 18850864 is about 266.1401639427.

The spelling of 18850864 in words is "eighteen million, eight hundred fifty thousand, eight hundred sixty-four".