156886381 has 16 divisors (see below), whose sum is σ = 170311680. Its totient is φ = 144088560.

The previous prime is 156886361. The next prime is 156886393. The reversal of 156886381 is 183688651.

It is not a de Polignac number, because 156886381 - 2¹¹ = 156884333 is a prime.

It is a super-2 number, since 2×156886381² = 49226673086554322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156886321) 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, 98316 + ... + 99898.

It is an arithmetic number, because the mean of its divisors is an integer number (10644480).

Almost surely, 2^156886381 is an apocalyptic number.

It is an amenable number.

156886381 is a deficient number, since it is larger than the sum of its proper divisors (13425299).

156886381 is a wasteful number, since it uses less digits than its factorization.

156886381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1776.

The product of its digits is 276480, while the sum is 46.

The square root of 156886381 is about 12525.4293738778. The cubic root of 156886381 is about 539.3389040597.

The spelling of 156886381 in words is "one hundred fifty-six million, eight hundred eighty-six thousand, three hundred eighty-one".