18683572 has 6 divisors (see below), whose sum is σ = 32696258. Its totient is φ = 9341784.

The previous prime is 18683551. The next prime is 18683611. The reversal of 18683572 is 27538681.

It can be written as a sum of positive squares in only one way, i.e., 14699556 + 3984016 = 3834^2 + 1996^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2335443 + ... + 2335450.

Almost surely, 2^18683572 is an apocalyptic number.

It is an amenable number.

18683572 is a deficient number, since it is larger than the sum of its proper divisors (14012686).

18683572 is a wasteful number, since it uses less digits than its factorization.

18683572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4670897 (or 4670895 counting only the distinct ones).

The product of its digits is 80640, while the sum is 40.

The square root of 18683572 is about 4322.4497683605. The cubic root of 18683572 is about 265.3505364692.

The spelling of 18683572 in words is "eighteen million, six hundred eighty-three thousand, five hundred seventy-two".