18885968 has 10 divisors (see below), whose sum is σ = 36591594. Its totient is φ = 9442976.

The previous prime is 18885961. The next prime is 18885983. The reversal of 18885968 is 86958881.

It can be written as a sum of positive squares in only one way, i.e., 17909824 + 976144 = 4232^2 + 988^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18885961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 590171 + ... + 590202.

Almost surely, 2^18885968 is an apocalyptic number.

It is an amenable number.

18885968 is a deficient number, since it is larger than the sum of its proper divisors (17705626).

18885968 is a wasteful number, since it uses less digits than its factorization.

18885968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180381 (or 1180375 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 53.

The square root of 18885968 is about 4345.7988908830. The cubic root of 18885968 is about 266.3052632023.

The spelling of 18885968 in words is "eighteen million, eight hundred eighty-five thousand, nine hundred sixty-eight".