195636173 has 2 divisors, whose sum is σ = 195636174. Its totient is φ = 195636172.

The previous prime is 195636167. The next prime is 195636223. The reversal of 195636173 is 371636591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 195636169 + 4 = 13987^2 + 2^2 .

It is an emirp because it is prime and its reverse (371636591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 195636173 - 2⁴ = 195636157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 195636173.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195636373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97818086 + 97818087.

It is an arithmetic number, because the mean of its divisors is an integer number (97818087).

Almost surely, 2^195636173 is an apocalyptic number.

It is an amenable number.

195636173 is a deficient number, since it is larger than the sum of its proper divisors (1).

195636173 is an equidigital number, since it uses as much as digits as its factorization.

195636173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 102060, while the sum is 41.

The square root of 195636173 is about 13987.0001429899. Note that the first 3 decimals coincide. The cubic root of 195636173 is about 580.5189301410.

The spelling of 195636173 in words is "one hundred ninety-five million, six hundred thirty-six thousand, one hundred seventy-three".