173161889 has 2 divisors, whose sum is σ = 173161890. Its totient is φ = 173161888.

The previous prime is 173161883. The next prime is 173161897. The reversal of 173161889 is 988161371.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 171741025 + 1420864 = 13105^2 + 1192^2 .

It is a cyclic number.

It is not a de Polignac number, because 173161889 - 2¹² = 173157793 is a prime.

It is not a weakly prime, because it can be changed into another prime (173161883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86580944 + 86580945.

It is an arithmetic number, because the mean of its divisors is an integer number (86580945).

Almost surely, 2^173161889 is an apocalyptic number.

It is an amenable number.

173161889 is a deficient number, since it is larger than the sum of its proper divisors (1).

173161889 is an equidigital number, since it uses as much as digits as its factorization.

173161889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 44.

The square root of 173161889 is about 13159.0990953028. The cubic root of 173161889 is about 557.3792176023.

The spelling of 173161889 in words is "one hundred seventy-three million, one hundred sixty-one thousand, eight hundred eighty-nine".