156881894 has 16 divisors (see below), whose sum is σ = 253680000. Its totient is φ = 72334080.

The previous prime is 156881843. The next prime is 156881897. The reversal of 156881894 is 498188651.

It is a super-2 number, since 2×156881894² = 49223857330054472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (156881897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30059 + ... + 34889.

It is an arithmetic number, because the mean of its divisors is an integer number (15855000).

Almost surely, 2^156881894 is an apocalyptic number.

156881894 is a deficient number, since it is larger than the sum of its proper divisors (96798106).

156881894 is a wasteful number, since it uses less digits than its factorization.

156881894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6095.

The product of its digits is 552960, while the sum is 50.

The square root of 156881894 is about 12525.2502569809. The cubic root of 156881894 is about 539.3337622564. Note that the first 3 decimals are identical.

The spelling of 156881894 in words is "one hundred fifty-six million, eight hundred eighty-one thousand, eight hundred ninety-four".