164630173 has 2 divisors, whose sum is σ = 164630174. Its totient is φ = 164630172.

The previous prime is 164630171. The next prime is 164630183. The reversal of 164630173 is 371036461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83576164 + 81054009 = 9142^2 + 9003^2 .

It is a cyclic number.

It is not a de Polignac number, because 164630173 - 2¹ = 164630171 is a prime.

Together with 164630171, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (164630171) 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, 82315086 + 82315087.

It is an arithmetic number, because the mean of its divisors is an integer number (82315087).

Almost surely, 2^164630173 is an apocalyptic number.

It is an amenable number.

164630173 is a deficient number, since it is larger than the sum of its proper divisors (1).

164630173 is an equidigital number, since it uses as much as digits as its factorization.

164630173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 164630173 is about 12830.8290067322. The cubic root of 164630173 is about 548.0705649536.

The spelling of 164630173 in words is "one hundred sixty-four million, six hundred thirty thousand, one hundred seventy-three".