18759968 has 24 divisors (see below), whose sum is σ = 37071468. Its totient is φ = 9345024.

The previous prime is 18759967. The next prime is 18759977. The reversal of 18759968 is 86995781.

It can be written as a sum of positive squares in 2 ways, for example, as 11641744 + 7118224 = 3412^2 + 2668^2 .

It is a super-2 number, since 2×18759968² = 703872798722048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18759967) 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, 9080 + ... + 10952.

Almost surely, 2^18759968 is an apocalyptic number.

It is an amenable number.

18759968 is a deficient number, since it is larger than the sum of its proper divisors (18311500).

18759968 is a wasteful number, since it uses less digits than its factorization.

18759968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2196 (or 2188 counting only the distinct ones).

The product of its digits is 1088640, while the sum is 53.

The square root of 18759968 is about 4331.2778714832. The cubic root of 18759968 is about 265.7117120915.

The spelling of 18759968 in words is "eighteen million, seven hundred fifty-nine thousand, nine hundred sixty-eight".