156801139 has 8 divisors (see below), whose sum is σ = 171164160. Its totient is φ = 142456200.

The previous prime is 156801137. The next prime is 156801191. The reversal of 156801139 is 931108651.

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 156801139 - 2¹ = 156801137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (156801133) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 18934 + ... + 25924.

It is an arithmetic number, because the mean of its divisors is an integer number (21395520).

Almost surely, 2^156801139 is an apocalyptic number.

156801139 is a deficient number, since it is larger than the sum of its proper divisors (14363021).

156801139 is a wasteful number, since it uses less digits than its factorization.

156801139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9041.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 156801139 is about 12522.0261539417. The cubic root of 156801139 is about 539.2412056371.

The spelling of 156801139 in words is "one hundred fifty-six million, eight hundred one thousand, one hundred thirty-nine".