195196959187 has 2 divisors, whose sum is σ = 195196959188. Its totient is φ = 195196959186.

The previous prime is 195196959161. The next prime is 195196959203. The reversal of 195196959187 is 781959691591.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-195196959187 is a prime.

It is not a weakly prime, because it can be changed into another prime (195196959137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97598479593 + 97598479594.

It is an arithmetic number, because the mean of its divisors is an integer number (97598479594).

Almost surely, 2^195196959187 is an apocalyptic number.

195196959187 is a deficient number, since it is larger than the sum of its proper divisors (1).

195196959187 is an equidigital number, since it uses as much as digits as its factorization.

195196959187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55112400, while the sum is 70.

The spelling of 195196959187 in words is "one hundred ninety-five billion, one hundred ninety-six million, nine hundred fifty-nine thousand, one hundred eighty-seven".