164646329 has 2 divisors, whose sum is σ = 164646330. Its totient is φ = 164646328.

The previous prime is 164646289. The next prime is 164646331. The reversal of 164646329 is 923646461.

164646329 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 can be written as a sum of positive squares in only one way, i.e., 158634025 + 6012304 = 12595^2 + 2452^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164646329 is a prime.

Together with 164646331, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (164646359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82323164 + 82323165.

It is an arithmetic number, because the mean of its divisors is an integer number (82323165).

Almost surely, 2^164646329 is an apocalyptic number.

It is an amenable number.

164646329 is a deficient number, since it is larger than the sum of its proper divisors (1).

164646329 is an equidigital number, since it uses as much as digits as its factorization.

164646329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 41.

The square root of 164646329 is about 12831.4585686897. The cubic root of 164646329 is about 548.0884926888.

The spelling of 164646329 in words is "one hundred sixty-four million, six hundred forty-six thousand, three hundred twenty-nine".