238985973171 has 48 divisors (see below), whose sum is σ = 388827479040. Its totient is φ = 140133240000.

The previous prime is 238985973019. The next prime is 238985973181. The reversal of 238985973171 is 171379589832.

238985973171 is a `hidden beast` number, since 2 + 3 + 8 + 9 + 8 + 597 + 31 + 7 + 1 = 666.

It is not a de Polignac number, because 238985973171 - 2²⁵ = 238952418739 is a prime.

It is a super-2 number, since 2×238985973171² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 238985973099 and 238985973108.

It is not an unprimeable number, because it can be changed into a prime (238985973181) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 17950065 + ... + 17963373.

It is an arithmetic number, because the mean of its divisors is an integer number (8100572480).

Almost surely, 2^238985973171 is an apocalyptic number.

238985973171 is a deficient number, since it is larger than the sum of its proper divisors (149841505869).

238985973171 is a wasteful number, since it uses less digits than its factorization.

238985973171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19208 (or 19205 counting only the distinct ones).

The product of its digits is 22861440, while the sum is 63.

The spelling of 238985973171 in words is "two hundred thirty-eight billion, nine hundred eighty-five million, nine hundred seventy-three thousand, one hundred seventy-one".