164640353 has 2 divisors, whose sum is σ = 164640354. Its totient is φ = 164640352.

The previous prime is 164640341. The next prime is 164640397. The reversal of 164640353 is 353046461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158961664 + 5678689 = 12608^2 + 2383^2 .

It is a cyclic number.

It is not a de Polignac number, because 164640353 - 2⁸ = 164640097 is a prime.

It is not a weakly prime, because it can be changed into another prime (164640323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82320176 + 82320177.

It is an arithmetic number, because the mean of its divisors is an integer number (82320177).

Almost surely, 2^164640353 is an apocalyptic number.

It is an amenable number.

164640353 is a deficient number, since it is larger than the sum of its proper divisors (1).

164640353 is an equidigital number, since it uses as much as digits as its factorization.

164640353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 164640353 is about 12831.2257013896. The cubic root of 164640353 is about 548.0818614721.

The spelling of 164640353 in words is "one hundred sixty-four million, six hundred forty thousand, three hundred fifty-three".