3195197758391 has 2 divisors, whose sum is σ = 3195197758392. Its totient is φ = 3195197758390.

The previous prime is 3195197758339. The next prime is 3195197758393. The reversal of 3195197758391 is 1938577915913.

3195197758391 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3195197758391 is a prime.

Together with 3195197758393, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3195197758393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1597598879195 + 1597598879196.

It is an arithmetic number, because the mean of its divisors is an integer number (1597598879196).

Almost surely, 2^{3195197758391} is an apocalyptic number.

3195197758391 is a deficient number, since it is larger than the sum of its proper divisors (1).

3195197758391 is an equidigital number, since it uses as much as digits as its factorization.

3195197758391 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64297800, while the sum is 68.

The spelling of 3195197758391 in words is "three trillion, one hundred ninety-five billion, one hundred ninety-seven million, seven hundred fifty-eight thousand, three hundred ninety-one".