18742684 has 12 divisors (see below), whose sum is σ = 32852008. Its totient is φ = 9356400.

The previous prime is 18742681. The next prime is 18742727. The reversal of 18742684 is 48624781.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18742681) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 627 + ... + 6154.

Almost surely, 2^18742684 is an apocalyptic number.

It is an amenable number.

18742684 is a deficient number, since it is larger than the sum of its proper divisors (14109324).

18742684 is a wasteful number, since it uses less digits than its factorization.

18742684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7476 (or 7474 counting only the distinct ones).

The product of its digits is 86016, while the sum is 40.

The square root of 18742684 is about 4329.2821575869. The cubic root of 18742684 is about 265.6300848669.

The spelling of 18742684 in words is "eighteen million, seven hundred forty-two thousand, six hundred eighty-four".