18812942 has 16 divisors (see below), whose sum is σ = 29585952. Its totient is φ = 8954880.

The previous prime is 18812929. The next prime is 18812951. The reversal of 18812942 is 24921881.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10238 + ... + 11934.

It is an arithmetic number, because the mean of its divisors is an integer number (1849122).

Almost surely, 2^18812942 is an apocalyptic number.

18812942 is a deficient number, since it is larger than the sum of its proper divisors (10773010).

18812942 is a wasteful number, since it uses less digits than its factorization.

18812942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1963.

The product of its digits is 9216, while the sum is 35.

The square root of 18812942 is about 4337.3888458380. The cubic root of 18812942 is about 265.9615807478.

The spelling of 18812942 in words is "eighteen million, eight hundred twelve thousand, nine hundred forty-two".