137953881 has 16 divisors (see below), whose sum is σ = 220097920. Its totient is φ = 84894480.

The previous prime is 137953843. The next prime is 137953901. The reversal of 137953881 is 188359731.

137953881 is a `hidden beast` number, since 1 + 37 + 9 + 538 + 81 = 666.

It is not a de Polignac number, because 137953881 - 2¹¹ = 137951833 is a prime.

It is a super-2 number, since 2×137953881² = 38062546565924322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (137953801) 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, 196165 + ... + 196866.

It is an arithmetic number, because the mean of its divisors is an integer number (13756120).

Almost surely, 2^137953881 is an apocalyptic number.

It is an amenable number.

137953881 is a deficient number, since it is larger than the sum of its proper divisors (82144039).

137953881 is a wasteful number, since it uses less digits than its factorization.

137953881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393053 (or 393047 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 137953881 is about 11745.3770054435. The cubic root of 137953881 is about 516.7073519586.

The spelling of 137953881 in words is "one hundred thirty-seven million, nine hundred fifty-three thousand, eight hundred eighty-one".