167537131969 has 9 divisors (see below), whose sum is σ = 168497509089. Its totient is φ = 166582204740.

The previous prime is 167537131961. The next prime is 167537132017. The reversal of 167537131969 is 969131735761.

The square root of 167537131969 is 409313.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 167537131969 - 2³ = 167537131961 is a prime.

It is a super-2 number, since 2×167537131969² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (167537131961) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 78177712 + ... + 78179854.

Almost surely, 2^167537131969 is an apocalyptic number.

167537131969 is the 409313-rd square number.

167537131969 is the 204657-th centered octagonal number.

It is an amenable number.

167537131969 is a deficient number, since it is larger than the sum of its proper divisors (960377120).

167537131969 is an frugal number, since it uses more digits than its factorization.

167537131969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4668 (or 2334 counting only the distinct ones).

The product of its digits is 6429780, while the sum is 58.

The spelling of 167537131969 in words is "one hundred sixty-seven billion, five hundred thirty-seven million, one hundred thirty-one thousand, nine hundred sixty-nine".