18366874 has 8 divisors (see below), whose sum is σ = 28295028. Its totient is φ = 8935200.

The previous prime is 18366869. The next prime is 18366899. The reversal of 18366874 is 47866381.

It can be written as a sum of positive squares in 2 ways, for example, as 17935225 + 431649 = 4235^2 + 657^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 18366874.

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, 124027 + ... + 124174.

Almost surely, 2^18366874 is an apocalyptic number.

18366874 is a deficient number, since it is larger than the sum of its proper divisors (9928154).

18366874 is a wasteful number, since it uses less digits than its factorization.

18366874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248240.

The product of its digits is 193536, while the sum is 43.

The square root of 18366874 is about 4285.6591091686. The cubic root of 18366874 is about 263.8426997587.

The spelling of 18366874 in words is "eighteen million, three hundred sixty-six thousand, eight hundred seventy-four".