18975568 has 20 divisors (see below), whose sum is σ = 36886528. Its totient is φ = 9456480.

The previous prime is 18975557. The next prime is 18975569. The reversal of 18975568 is 86557981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18975569) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3505 + ... + 7087.

Almost surely, 2^18975568 is an apocalyptic number.

It is an amenable number.

18975568 is a deficient number, since it is larger than the sum of its proper divisors (17910960).

18975568 is a wasteful number, since it uses less digits than its factorization.

18975568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3922 (or 3916 counting only the distinct ones).

The product of its digits is 604800, while the sum is 49.

The square root of 18975568 is about 4356.0954994123. The cubic root of 18975568 is about 266.7257396907.

It can be divided in two parts, 189 and 75568, that added together give a palindrome (75757).

The spelling of 18975568 in words is "eighteen million, nine hundred seventy-five thousand, five hundred sixty-eight".