18974866 has 8 divisors (see below), whose sum is σ = 28738944. Its totient is φ = 9395220.

The previous prime is 18974833. The next prime is 18974881. The reversal of 18974866 is 66847981.

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, 45850 + ... + 46261.

It is an arithmetic number, because the mean of its divisors is an integer number (3592368).

Almost surely, 2^18974866 is an apocalyptic number.

18974866 is a deficient number, since it is larger than the sum of its proper divisors (9764078).

18974866 is a wasteful number, since it uses less digits than its factorization.

18974866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92216.

The product of its digits is 580608, while the sum is 49.

The square root of 18974866 is about 4356.0149219212. The cubic root of 18974866 is about 266.7224504826.

The spelling of 18974866 in words is "eighteen million, nine hundred seventy-four thousand, eight hundred sixty-six".