195956220319 has 2 divisors, whose sum is σ = 195956220320. Its totient is φ = 195956220318.

The previous prime is 195956220277. The next prime is 195956220337. The reversal of 195956220319 is 913022659591.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 195956220319 - 2⁷ = 195956220191 is a prime.

It is a super-2 number, since 2×195956220319² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195956220379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97978110159 + 97978110160.

It is an arithmetic number, because the mean of its divisors is an integer number (97978110160).

Almost surely, 2^195956220319 is an apocalyptic number.

195956220319 is a deficient number, since it is larger than the sum of its proper divisors (1).

195956220319 is an equidigital number, since it uses as much as digits as its factorization.

195956220319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1312200, while the sum is 52.

The spelling of 195956220319 in words is "one hundred ninety-five billion, nine hundred fifty-six million, two hundred twenty thousand, three hundred nineteen".