138806130 has 16 divisors (see below), whose sum is σ = 333134784. Its totient is φ = 37014960.

The previous prime is 138806117. The next prime is 138806147. The reversal of 138806130 is 31608831.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 4626871 = 138806130 / (1 + 3 + 8 + 8 + 0 + 6 + 1 + 3 + 0).

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, 2313406 + ... + 2313465.

It is an arithmetic number, because the mean of its divisors is an integer number (20820924).

Almost surely, 2^138806130 is an apocalyptic number.

138806130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138806130 is an abundant number, since it is smaller than the sum of its proper divisors (194328654).

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

138806130 is a wasteful number, since it uses less digits than its factorization.

138806130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4626881.

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 138806130 is about 11781.6013342839. The cubic root of 138806130 is about 517.7692034447.

The spelling of 138806130 in words is "one hundred thirty-eight million, eight hundred six thousand, one hundred thirty".