164194013 has 2 divisors, whose sum is σ = 164194014. Its totient is φ = 164194012.

The previous prime is 164193979. The next prime is 164194021. The reversal of 164194013 is 310491461.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 163149529 + 1044484 = 12773^2 + 1022^2 .

It is a cyclic number.

It is not a de Polignac number, because 164194013 - 2¹⁰ = 164192989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164194213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82097006 + 82097007.

It is an arithmetic number, because the mean of its divisors is an integer number (82097007).

Almost surely, 2^164194013 is an apocalyptic number.

It is an amenable number.

164194013 is a deficient number, since it is larger than the sum of its proper divisors (1).

164194013 is an equidigital number, since it uses as much as digits as its factorization.

164194013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 164194013 is about 12813.8211709076. The cubic root of 164194013 is about 547.5861299136.

The spelling of 164194013 in words is "one hundred sixty-four million, one hundred ninety-four thousand, thirteen".