195190313 has 2 divisors, whose sum is σ = 195190314. Its totient is φ = 195190312.

The previous prime is 195190297. The next prime is 195190319. The reversal of 195190313 is 313091591.

It is a happy number.

195190313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 185722384 + 9467929 = 13628^2 + 3077^2 .

It is an emirp because it is prime and its reverse (313091591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 195190313 - 2⁴ = 195190297 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 195190313.

It is not a weakly prime, because it can be changed into another prime (195190319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97595156 + 97595157.

It is an arithmetic number, because the mean of its divisors is an integer number (97595157).

Almost surely, 2^195190313 is an apocalyptic number.

It is an amenable number.

195190313 is a deficient number, since it is larger than the sum of its proper divisors (1).

195190313 is an equidigital number, since it uses as much as digits as its factorization.

195190313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3645, while the sum is 32.

The square root of 195190313 is about 13971.0526804533. The cubic root of 195190313 is about 580.0775887086.

The spelling of 195190313 in words is "one hundred ninety-five million, one hundred ninety thousand, three hundred thirteen".