164320613 has 2 divisors, whose sum is σ = 164320614. Its totient is φ = 164320612.

The previous prime is 164320573. The next prime is 164320621. The reversal of 164320613 is 316023461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 92121604 + 72199009 = 9598^2 + 8497^2 .

It is a cyclic number.

It is not a de Polignac number, because 164320613 - 2⁶ = 164320549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164320643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82160306 + 82160307.

It is an arithmetic number, because the mean of its divisors is an integer number (82160307).

Almost surely, 2^164320613 is an apocalyptic number.

It is an amenable number.

164320613 is a deficient number, since it is larger than the sum of its proper divisors (1).

164320613 is an equidigital number, since it uses as much as digits as its factorization.

164320613 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 164320613 is about 12818.7601974606. The cubic root of 164320613 is about 547.7268305257.

The spelling of 164320613 in words is "one hundred sixty-four million, three hundred twenty thousand, six hundred thirteen".