18983968 has 24 divisors (see below), whose sum is σ = 39574332. Its totient is φ = 8933376.

The previous prime is 18983963. The next prime is 18983971. The reversal of 18983968 is 86938981.

It can be written as a sum of positive squares in 2 ways, for example, as 18558864 + 425104 = 4308^2 + 652^2 .

It is not an unprimeable number, because it can be changed into a prime (18983963) 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, 16905 + ... + 17992.

Almost surely, 2^18983968 is an apocalyptic number.

It is an amenable number.

18983968 is an abundant number, since it is smaller than the sum of its proper divisors (20590364).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18983968 is a wasteful number, since it uses less digits than its factorization.

18983968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34924 (or 34916 counting only the distinct ones).

The product of its digits is 746496, while the sum is 52.

The square root of 18983968 is about 4357.0595589227. The cubic root of 18983968 is about 266.7650914454.

The spelling of 18983968 in words is "eighteen million, nine hundred eighty-three thousand, nine hundred sixty-eight".