164972579 has 2 divisors, whose sum is σ = 164972580. Its totient is φ = 164972578.

The previous prime is 164972569. The next prime is 164972657. The reversal of 164972579 is 975279461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 164972579 - 2⁸ = 164972323 is a prime.

It is a super-2 number, since 2×164972579² = 54431903643822482, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (164972519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82486289 + 82486290.

It is an arithmetic number, because the mean of its divisors is an integer number (82486290).

Almost surely, 2^164972579 is an apocalyptic number.

164972579 is a deficient number, since it is larger than the sum of its proper divisors (1).

164972579 is an equidigital number, since it uses as much as digits as its factorization.

164972579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 952560, while the sum is 50.

The square root of 164972579 is about 12844.1651733384. The cubic root of 164972579 is about 548.4502699478.

The spelling of 164972579 in words is "one hundred sixty-four million, nine hundred seventy-two thousand, five hundred seventy-nine".