18700474 has 16 divisors (see below), whose sum is σ = 30506112. Its totient is φ = 8545968.

The previous prime is 18700457. The next prime is 18700499. The reversal of 18700474 is 47400781.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 814 + ... + 6169.

It is an arithmetic number, because the mean of its divisors is an integer number (1906632).

Almost surely, 2^18700474 is an apocalyptic number.

18700474 is a deficient number, since it is larger than the sum of its proper divisors (11805638).

18700474 is a wasteful number, since it uses less digits than its factorization.

18700474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7101.

The product of its (nonzero) digits is 6272, while the sum is 31.

The square root of 18700474 is about 4324.4044676695. The cubic root of 18700474 is about 265.4305283647.

The spelling of 18700474 in words is "eighteen million, seven hundred thousand, four hundred seventy-four".