156138807 has 8 divisors (see below), whose sum is σ = 227111040. Its totient is φ = 94629560.

The previous prime is 156138799. The next prime is 156138823. The reversal of 156138807 is 708831651.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 156138807 - 2³ = 156138799 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156138887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2365707 + ... + 2365772.

It is an arithmetic number, because the mean of its divisors is an integer number (28388880).

Almost surely, 2^156138807 is an apocalyptic number.

156138807 is a deficient number, since it is larger than the sum of its proper divisors (70972233).

156138807 is a wasteful number, since it uses less digits than its factorization.

156138807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4731493.

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 156138807 is about 12495.5514884298. The cubic root of 156138807 is about 538.4808778920.

The spelling of 156138807 in words is "one hundred fifty-six million, one hundred thirty-eight thousand, eight hundred seven".