164368613 has 2 divisors, whose sum is σ = 164368614.
Its totient is φ = 164368612.
The previous prime is 164368571. The next prime is 164368667. The reversal of 164368613 is 316863461.
It is a happy number.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 162231169 + 2137444 = 12737^2 + 1462^2
It is a cyclic number.
It is not a de Polignac number, because 164368613 - 28 = 164368357 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (164368693) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82184306 + 82184307.
It is an arithmetic number, because the mean of its divisors is an integer number (82184307).
Almost surely, 2164368613 is an apocalyptic number.
It is an amenable number.
164368613 is a deficient number, since it is larger than the sum of its proper divisors (1).
164368613 is an equidigital number, since it uses as much as digits as its factorization.
164368613 is an evil number, because the sum of its binary digits is even.
The product of its digits is 62208, while the sum is 38.
The square root of 164368613 is about 12820.6323166995.
The cubic root of 164368613 is about 547.7801578347.
The spelling of 164368613 in words is "one hundred sixty-four million, three hundred sixty-eight thousand, six hundred thirteen".