167091983 has 4 divisors (see below), whose sum is σ = 167173248. Its totient is φ = 167010720.

The previous prime is 167091961. The next prime is 167092021. The reversal of 167091983 is 389190761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 389190761 = 1493 ⋅260677.

It is a cyclic number.

It is not a de Polignac number, because 167091983 - 2²⁰ = 166043407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (167091923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37466 + ... + 41687.

It is an arithmetic number, because the mean of its divisors is an integer number (41793312).

Almost surely, 2^167091983 is an apocalyptic number.

167091983 is a deficient number, since it is larger than the sum of its proper divisors (81265).

167091983 is an equidigital number, since it uses as much as digits as its factorization.

167091983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81264.

The product of its (nonzero) digits is 81648, while the sum is 44.

The square root of 167091983 is about 12926.4064225136. The cubic root of 167091983 is about 550.7889317103.

The spelling of 167091983 in words is "one hundred sixty-seven million, ninety-one thousand, nine hundred eighty-three".