164372279 has 2 divisors, whose sum is σ = 164372280. Its totient is φ = 164372278.

The previous prime is 164372267. The next prime is 164372309. The reversal of 164372279 is 972273461.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 164372279 - 2⁸ = 164372023 is a prime.

It is a super-2 number, since 2×164372279² = 54036492207307682, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164372179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82186139 + 82186140.

It is an arithmetic number, because the mean of its divisors is an integer number (82186140).

Almost surely, 2^164372279 is an apocalyptic number.

164372279 is a deficient number, since it is larger than the sum of its proper divisors (1).

164372279 is an equidigital number, since it uses as much as digits as its factorization.

164372279 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 41.

The square root of 164372279 is about 12820.7752885697. The cubic root of 164372279 is about 547.7842302811.

The spelling of 164372279 in words is "one hundred sixty-four million, three hundred seventy-two thousand, two hundred seventy-nine".