167491023 has 16 divisors (see below), whose sum is σ = 268657920. Its totient is φ = 90671616.

The previous prime is 167491019. The next prime is 167491039. The reversal of 167491023 is 320194761.

It is not a de Polignac number, because 167491023 - 2² = 167491019 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (167491013) 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, 209490 + ... + 210287.

It is an arithmetic number, because the mean of its divisors is an integer number (16791120).

Almost surely, 2^167491023 is an apocalyptic number.

167491023 is a deficient number, since it is larger than the sum of its proper divisors (101166897).

167491023 is a wasteful number, since it uses less digits than its factorization.

167491023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419806.

The product of its (nonzero) digits is 9072, while the sum is 33.

The square root of 167491023 is about 12941.8322891312. The cubic root of 167491023 is about 551.2270378802.

The spelling of 167491023 in words is "one hundred sixty-seven million, four hundred ninety-one thousand, twenty-three".