164542373 has 2 divisors, whose sum is σ = 164542374. Its totient is φ = 164542372.

The previous prime is 164542331. The next prime is 164542387. The reversal of 164542373 is 373245461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136843204 + 27699169 = 11698^2 + 5263^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164542373 is a prime.

It is a super-2 number, since 2×164542373² = 54148385024942258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164542673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82271186 + 82271187.

It is an arithmetic number, because the mean of its divisors is an integer number (82271187).

Almost surely, 2^164542373 is an apocalyptic number.

It is an amenable number.

164542373 is a deficient number, since it is larger than the sum of its proper divisors (1).

164542373 is an equidigital number, since it uses as much as digits as its factorization.

164542373 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 35.

The square root of 164542373 is about 12827.4071035420. The cubic root of 164542373 is about 547.9731159223.

The spelling of 164542373 in words is "one hundred sixty-four million, five hundred forty-two thousand, three hundred seventy-three".