18879436 has 12 divisors (see below), whose sum is σ = 33197080. Its totient is φ = 9394560.

The previous prime is 18879433. The next prime is 18879437. The reversal of 18879436 is 63497881.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18879431) 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, 10341 + ... + 12028.

Almost surely, 2^18879436 is an apocalyptic number.

It is an amenable number.

18879436 is a deficient number, since it is larger than the sum of its proper divisors (14317644).

18879436 is a wasteful number, since it uses less digits than its factorization.

18879436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22584 (or 22582 counting only the distinct ones).

The product of its digits is 290304, while the sum is 46.

The square root of 18879436 is about 4345.0472954848. The cubic root of 18879436 is about 266.2745577501.

The spelling of 18879436 in words is "eighteen million, eight hundred seventy-nine thousand, four hundred thirty-six".