130638636 has 24 divisors (see below), whose sum is σ = 338693040. Its totient is φ = 43546176.

The previous prime is 130638617. The next prime is 130638653. The reversal of 130638636 is 636836031.

130638636 is a `hidden beast` number, since 13 + 0 + 6 + 3 + 8 + 636 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 130638636.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 604701 + ... + 604916.

It is an arithmetic number, because the mean of its divisors is an integer number (14112210).

Almost surely, 2^130638636 is an apocalyptic number.

It is an amenable number.

130638636 is an abundant number, since it is smaller than the sum of its proper divisors (208054404).

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

130638636 is a wasteful number, since it uses less digits than its factorization.

130638636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1209630 (or 1209622 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 130638636 is about 11429.7259809673. The cubic root of 130638636 is about 507.4078857626.

The spelling of 130638636 in words is "one hundred thirty million, six hundred thirty-eight thousand, six hundred thirty-six".