138156395 has 16 divisors (see below), whose sum is σ = 179542272. Its totient is φ = 101450880.

The previous prime is 138156379. The next prime is 138156407. The reversal of 138156395 is 593651831.

It is not a de Polignac number, because 138156395 - 2⁴ = 138156379 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5894 + ... + 17636.

It is an arithmetic number, because the mean of its divisors is an integer number (11221392).

Almost surely, 2^138156395 is an apocalyptic number.

138156395 is a deficient number, since it is larger than the sum of its proper divisors (41385877).

138156395 is a wasteful number, since it uses less digits than its factorization.

138156395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11942.

The product of its digits is 97200, while the sum is 41.

The square root of 138156395 is about 11753.9948528149. The cubic root of 138156395 is about 516.9600676008.

The spelling of 138156395 in words is "one hundred thirty-eight million, one hundred fifty-six thousand, three hundred ninety-five".