195357913 has 2 divisors, whose sum is σ = 195357914. Its totient is φ = 195357912.

The previous prime is 195357871. The next prime is 195357919. The reversal of 195357913 is 319753591.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 193849929 + 1507984 = 13923^2 + 1228^2 .

It is an emirp because it is prime and its reverse (319753591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 195357913 - 2⁹ = 195357401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 195357913.

It is not a weakly prime, because it can be changed into another prime (195357919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97678956 + 97678957.

It is an arithmetic number, because the mean of its divisors is an integer number (97678957).

Almost surely, 2^195357913 is an apocalyptic number.

It is an amenable number.

195357913 is a deficient number, since it is larger than the sum of its proper divisors (1).

195357913 is an equidigital number, since it uses as much as digits as its factorization.

195357913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127575, while the sum is 43.

The square root of 195357913 is about 13977.0495098214. The cubic root of 195357913 is about 580.2435689245.

The spelling of 195357913 in words is "one hundred ninety-five million, three hundred fifty-seven thousand, nine hundred thirteen".