164375639 has 2 divisors, whose sum is σ = 164375640. Its totient is φ = 164375638.

The previous prime is 164375573. The next prime is 164375657. The reversal of 164375639 is 936573461.

It is a happy number.

164375639 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 164375639 - 2⁸ = 164375383 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 164375639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164375699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82187819 + 82187820.

It is an arithmetic number, because the mean of its divisors is an integer number (82187820).

Almost surely, 2^164375639 is an apocalyptic number.

164375639 is a deficient number, since it is larger than the sum of its proper divisors (1).

164375639 is an equidigital number, since it uses as much as digits as its factorization.

164375639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 408240, while the sum is 44.

The square root of 164375639 is about 12820.9063252174. The cubic root of 164375639 is about 547.7879627484.

The spelling of 164375639 in words is "one hundred sixty-four million, three hundred seventy-five thousand, six hundred thirty-nine".