172329163 has 2 divisors, whose sum is σ = 172329164. Its totient is φ = 172329162.

The previous prime is 172329161. The next prime is 172329167. The reversal of 172329163 is 361923271.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 172329163 - 2¹ = 172329161 is a prime.

Together with 172329161, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (172329161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86164581 + 86164582.

It is an arithmetic number, because the mean of its divisors is an integer number (86164582).

Almost surely, 2^172329163 is an apocalyptic number.

172329163 is a deficient number, since it is larger than the sum of its proper divisors (1).

172329163 is an equidigital number, since it uses as much as digits as its factorization.

172329163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 34.

The square root of 172329163 is about 13127.4202720870. The cubic root of 172329163 is about 556.4843128828.

The spelling of 172329163 in words is "one hundred seventy-two million, three hundred twenty-nine thousand, one hundred sixty-three".