195717173 has 2 divisors, whose sum is σ = 195717174. Its totient is φ = 195717172.

The previous prime is 195717139. The next prime is 195717187. The reversal of 195717173 is 371717591.

195717173 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 183277444 + 12439729 = 13538^2 + 3527^2 .

It is a cyclic number.

It is not a de Polignac number, because 195717173 - 2¹⁴ = 195700789 is a prime.

It is a super-2 number, since 2×195717173² = 76610423614223858, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 195717173.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195717103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97858586 + 97858587.

It is an arithmetic number, because the mean of its divisors is an integer number (97858587).

Almost surely, 2^195717173 is an apocalyptic number.

It is an amenable number.

195717173 is a deficient number, since it is larger than the sum of its proper divisors (1).

195717173 is an equidigital number, since it uses as much as digits as its factorization.

195717173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46305, while the sum is 41.

The square root of 195717173 is about 13989.8953891729. The cubic root of 195717173 is about 580.5990372509.

The spelling of 195717173 in words is "one hundred ninety-five million, seven hundred seventeen thousand, one hundred seventy-three".