195892117 has 2 divisors, whose sum is σ = 195892118. Its totient is φ = 195892116.

The previous prime is 195892111. The next prime is 195892141. The reversal of 195892117 is 711298591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 177582276 + 18309841 = 13326^2 + 4279^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-195892117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195892111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97946058 + 97946059.

It is an arithmetic number, because the mean of its divisors is an integer number (97946059).

Almost surely, 2^195892117 is an apocalyptic number.

It is an amenable number.

195892117 is a deficient number, since it is larger than the sum of its proper divisors (1).

195892117 is an equidigital number, since it uses as much as digits as its factorization.

195892117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 45360, while the sum is 43.

The square root of 195892117 is about 13996.1465053778. The cubic root of 195892117 is about 580.7719773965.

The spelling of 195892117 in words is "one hundred ninety-five million, eight hundred ninety-two thousand, one hundred seventeen".