130870638 has 12 divisors (see below), whose sum is σ = 283553088. Its totient is φ = 43623540.

The previous prime is 130870637. The next prime is 130870657. The reversal of 130870638 is 836078031.

130870638 is a `hidden beast` number, since 13 + 0 + 8 + 7 + 0 + 638 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130870637) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3635278 + ... + 3635313.

It is an arithmetic number, because the mean of its divisors is an integer number (23629424).

Almost surely, 2^130870638 is an apocalyptic number.

130870638 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

130870638 is an abundant number, since it is smaller than the sum of its proper divisors (152682450).

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

130870638 is a wasteful number, since it uses less digits than its factorization.

130870638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7270599 (or 7270596 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 130870638 is about 11439.8705412255. The cubic root of 130870638 is about 507.7080777788.

The spelling of 130870638 in words is "one hundred thirty million, eight hundred seventy thousand, six hundred thirty-eight".