156639130 has 32 divisors (see below), whose sum is σ = 290672640. Its totient is φ = 60730560.

The previous prime is 156639127. The next prime is 156639137. The reversal of 156639130 is 31936651.

156639130 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (156639137) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121831 + ... + 123109.

It is an arithmetic number, because the mean of its divisors is an integer number (9083520).

Almost surely, 2^156639130 is an apocalyptic number.

156639130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

156639130 is a deficient number, since it is larger than the sum of its proper divisors (134033510).

156639130 is a wasteful number, since it uses less digits than its factorization.

156639130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1654.

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 156639130 is about 12515.5555210306. Note that the first 4 decimals coincide. The cubic root of 156639130 is about 539.0554246022.

The spelling of 156639130 in words is "one hundred fifty-six million, six hundred thirty-nine thousand, one hundred thirty".