30018973968 has 60 divisors (see below), whose sum is σ = 84223210188. Its totient is φ = 9981100800.

The previous prime is 30018973951. The next prime is 30018973987. The reversal of 30018973968 is 86937981003.

30018973968 is a `hidden beast` number, since 300 + 189 + 73 + 96 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13560136704 + 16458837264 = 116448^2 + 128292^2 .

It is a super-2 number, since 2×30018973968² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 205383 + ... + 319718.

Almost surely, 2^30018973968 is an apocalyptic number.

It is an amenable number.

30018973968 is an abundant number, since it is smaller than the sum of its proper divisors (54204236220).

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

30018973968 is a wasteful number, since it uses less digits than its factorization.

30018973968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525512 (or 525503 counting only the distinct ones).

The product of its (nonzero) digits is 1959552, while the sum is 54.

The spelling of 30018973968 in words is "thirty billion, eighteen million, nine hundred seventy-three thousand, nine hundred sixty-eight".