195402811013 has 2 divisors, whose sum is σ = 195402811014. Its totient is φ = 195402811012.

The previous prime is 195402810971. The next prime is 195402811033. The reversal of 195402811013 is 310118204591.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191002213444 + 4400597569 = 437038^2 + 66337^2 .

It is a cyclic number.

It is not a de Polignac number, because 195402811013 - 2³⁴ = 178222941829 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195402811033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97701405506 + 97701405507.

It is an arithmetic number, because the mean of its divisors is an integer number (97701405507).

Almost surely, 2^195402811013 is an apocalyptic number.

It is an amenable number.

195402811013 is a deficient number, since it is larger than the sum of its proper divisors (1).

195402811013 is an equidigital number, since it uses as much as digits as its factorization.

195402811013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 35.

The spelling of 195402811013 in words is "one hundred ninety-five billion, four hundred two million, eight hundred eleven thousand, thirteen".