18368372 has 24 divisors (see below), whose sum is σ = 35303520. Its totient is φ = 8292960.

The previous prime is 18368359. The next prime is 18368387. The reversal of 18368372 is 27386381.

It is a happy number.

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, 5579 + ... + 8237.

It is an arithmetic number, because the mean of its divisors is an integer number (1470980).

Almost surely, 2^18368372 is an apocalyptic number.

It is an amenable number.

18368372 is a deficient number, since it is larger than the sum of its proper divisors (16935148).

18368372 is a wasteful number, since it uses less digits than its factorization.

18368372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2831 (or 2829 counting only the distinct ones).

The product of its digits is 48384, while the sum is 38.

The square root of 18368372 is about 4285.8338745220. The cubic root of 18368372 is about 263.8498725565.

Subtracting 18368372 from its reverse (27386381), we obtain a square (9018009 = 3003²).

The spelling of 18368372 in words is "eighteen million, three hundred sixty-eight thousand, three hundred seventy-two".