13195976789 has 2 divisors, whose sum is σ = 13195976790. Its totient is φ = 13195976788.

The previous prime is 13195976771. The next prime is 13195976791. The reversal of 13195976789 is 98767959131.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12309902500 + 886074289 = 110950^2 + 29767^2 .

It is a cyclic number.

It is not a de Polignac number, because 13195976789 - 2³² = 8901009493 is a prime.

It is a Sophie Germain prime.

Together with 13195976791, it forms a pair of twin primes.

It is a Chen 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 (13195972789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6597988394 + 6597988395.

It is an arithmetic number, because the mean of its divisors is an integer number (6597988395).

Almost surely, 2^13195976789 is an apocalyptic number.

It is an amenable number.

13195976789 is a deficient number, since it is larger than the sum of its proper divisors (1).

13195976789 is an equidigital number, since it uses as much as digits as its factorization.

13195976789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25719120, while the sum is 65.

The spelling of 13195976789 in words is "thirteen billion, one hundred ninety-five million, nine hundred seventy-six thousand, seven hundred eighty-nine".