195196959161 has 2 divisors, whose sum is σ = 195196959162. Its totient is φ = 195196959160.

The previous prime is 195196959157. The next prime is 195196959187. The reversal of 195196959161 is 161959691591.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 187354794025 + 7842165136 = 432845^2 + 88556^2 .

It is a cyclic number.

It is not a de Polignac number, because 195196959161 - 2² = 195196959157 is a prime.

It is a super-2 number, since 2×195196959161² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 195196959094 and 195196959103.

It is not a weakly prime, because it can be changed into another prime (195196959761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97598479580 + 97598479581.

It is an arithmetic number, because the mean of its divisors is an integer number (97598479581).

Almost surely, 2^195196959161 is an apocalyptic number.

It is an amenable number.

195196959161 is a deficient number, since it is larger than the sum of its proper divisors (1).

195196959161 is an equidigital number, since it uses as much as digits as its factorization.

195196959161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5904900, while the sum is 62.

The spelling of 195196959161 in words is "one hundred ninety-five billion, one hundred ninety-six million, nine hundred fifty-nine thousand, one hundred sixty-one".