18539042 has 8 divisors (see below), whose sum is σ = 27826896. Its totient is φ = 9263412.

The previous prime is 18538997. The next prime is 18539051. The reversal of 18539042 is 24093581.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3953 + ... + 7259.

It is an arithmetic number, because the mean of its divisors is an integer number (3478362).

Almost surely, 2^18539042 is an apocalyptic number.

18539042 is a deficient number, since it is larger than the sum of its proper divisors (9287854).

18539042 is a wasteful number, since it uses less digits than its factorization.

18539042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6112.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 18539042 is about 4305.6987818471. The cubic root of 18539042 is about 264.6645428989.

The spelling of 18539042 in words is "eighteen million, five hundred thirty-nine thousand, forty-two".