18902042 has 16 divisors (see below), whose sum is σ = 29302560. Its totient is φ = 9137808.

The previous prime is 18902041. The next prime is 18902047. The reversal of 18902042 is 24020981.

It is not an unprimeable number, because it can be changed into a prime (18902041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12533 + ... + 13959.

It is an arithmetic number, because the mean of its divisors is an integer number (1831410).

Almost surely, 2^18902042 is an apocalyptic number.

18902042 is a deficient number, since it is larger than the sum of its proper divisors (10400518).

18902042 is a wasteful number, since it uses less digits than its factorization.

18902042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1645.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 18902042 is about 4347.6478698257. The cubic root of 18902042 is about 266.3807932989.

The spelling of 18902042 in words is "eighteen million, nine hundred two thousand, forty-two".