18974456 has 16 divisors (see below), whose sum is σ = 35683200. Its totient is φ = 9458944.

The previous prime is 18974441. The next prime is 18974489. The reversal of 18974456 is 65447981.

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 3 ways as a sum of consecutive naturals, for example, 536 + ... + 6183.

It is an arithmetic number, because the mean of its divisors is an integer number (2230200).

Almost surely, 2^18974456 is an apocalyptic number.

It is an amenable number.

18974456 is a deficient number, since it is larger than the sum of its proper divisors (16708744).

18974456 is a wasteful number, since it uses less digits than its factorization.

18974456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7078 (or 7074 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The square root of 18974456 is about 4355.9678603038. The cubic root of 18974456 is about 266.7205293976.

The spelling of 18974456 in words is "eighteen million, nine hundred seventy-four thousand, four hundred fifty-six".