164936173 has 2 divisors, whose sum is σ = 164936174. Its totient is φ = 164936172.

The previous prime is 164936171. The next prime is 164936179. The reversal of 164936173 is 371639461.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 111894084 + 53042089 = 10578^2 + 7283^2 .

It is a cyclic number.

It is not a de Polignac number, because 164936173 - 2¹ = 164936171 is a prime.

Together with 164936171, 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 (164936171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82468086 + 82468087.

It is an arithmetic number, because the mean of its divisors is an integer number (82468087).

Almost surely, 2^164936173 is an apocalyptic number.

It is an amenable number.

164936173 is a deficient number, since it is larger than the sum of its proper divisors (1).

164936173 is an equidigital number, since it uses as much as digits as its factorization.

164936173 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 81648, while the sum is 40.

The square root of 164936173 is about 12842.7478757468. The cubic root of 164936173 is about 548.4099231427.

The spelling of 164936173 in words is "one hundred sixty-four million, nine hundred thirty-six thousand, one hundred seventy-three".