18928942 has 16 divisors (see below), whose sum is σ = 28868400. Its totient is φ = 9307648.

The previous prime is 18928937. The next prime is 18928951. The reversal of 18928942 is 24982981.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41934 + ... + 42382.

It is an arithmetic number, because the mean of its divisors is an integer number (1804275).

Almost surely, 2^18928942 is an apocalyptic number.

18928942 is a deficient number, since it is larger than the sum of its proper divisors (9939458).

18928942 is a wasteful number, since it uses less digits than its factorization.

18928942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 755.

The product of its digits is 82944, while the sum is 43.

The square root of 18928942 is about 4350.7403967601. The cubic root of 18928942 is about 266.5070979387.

The spelling of 18928942 in words is "eighteen million, nine hundred twenty-eight thousand, nine hundred forty-two".