630995022018 has 24 divisors (see below), whose sum is σ = 1404106041468. Its totient is φ = 204647033952.

The previous prime is 630995022013. The next prime is 630995022019. The reversal of 630995022018 is 810220599036.

630995022018 is a `hidden beast` number, since 6 + 30 + 99 + 502 + 20 + 1 + 8 = 666.

630995022018 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 624989856969 + 6005165049 = 790563^2 + 77493^2 .

It is a super-2 number, since 2×630995022018² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (630995022013) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 473719321 + ... + 473720652.

Almost surely, 2^630995022018 is an apocalyptic number.

630995022018 is an abundant number, since it is smaller than the sum of its proper divisors (773111019450).

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

630995022018 is a wasteful number, since it uses less digits than its factorization.

630995022018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947440018 (or 947440015 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The spelling of 630995022018 in words is "six hundred thirty billion, nine hundred ninety-five million, twenty-two thousand, eighteen".