156318139 has 2 divisors, whose sum is σ = 156318140. Its totient is φ = 156318138.

The previous prime is 156318131. The next prime is 156318157. The reversal of 156318139 is 931813651.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 156318139 - 2³ = 156318131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 156318098 and 156318107.

It is not a weakly prime, because it can be changed into another prime (156318131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78159069 + 78159070.

It is an arithmetic number, because the mean of its divisors is an integer number (78159070).

Almost surely, 2^156318139 is an apocalyptic number.

156318139 is a deficient number, since it is larger than the sum of its proper divisors (1).

156318139 is an equidigital number, since it uses as much as digits as its factorization.

156318139 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 19440, while the sum is 37.

The square root of 156318139 is about 12502.7252629177. The cubic root of 156318139 is about 538.6869550099.

The spelling of 156318139 in words is "one hundred fifty-six million, three hundred eighteen thousand, one hundred thirty-nine".