18982372 has 6 divisors (see below), whose sum is σ = 33219158. Its totient is φ = 9491184.

The previous prime is 18982339. The next prime is 18982391. The reversal of 18982372 is 27328981.

It can be written as a sum of positive squares in only one way, i.e., 18800896 + 181476 = 4336^2 + 426^2 .

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 as a sum of consecutive naturals, namely, 2372793 + ... + 2372800.

Almost surely, 2^18982372 is an apocalyptic number.

It is an amenable number.

18982372 is a deficient number, since it is larger than the sum of its proper divisors (14236786).

18982372 is a wasteful number, since it uses less digits than its factorization.

18982372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4745597 (or 4745595 counting only the distinct ones).

The product of its digits is 48384, while the sum is 40.

The square root of 18982372 is about 4356.8764040308. The cubic root of 18982372 is about 266.7576155054.

The spelling of 18982372 in words is "eighteen million, nine hundred eighty-two thousand, three hundred seventy-two".