195315619 has 2 divisors, whose sum is σ = 195315620. Its totient is φ = 195315618.

The previous prime is 195315587. The next prime is 195315623. The reversal of 195315619 is 916513591.

195315619 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 is a cyclic number.

It is not a de Polignac number, because 195315619 - 2⁵ = 195315587 is a prime.

It is a super-2 number, since 2×195315619² = 76296382050706322, which contains 22 as substring.

It is a Chen prime.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97657809 + 97657810.

It is an arithmetic number, because the mean of its divisors is an integer number (97657810).

Almost surely, 2^195315619 is an apocalyptic number.

195315619 is a deficient number, since it is larger than the sum of its proper divisors (1).

195315619 is an equidigital number, since it uses as much as digits as its factorization.

195315619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 36450, while the sum is 40.

The square root of 195315619 is about 13975.5364476645. The cubic root of 195315619 is about 580.2016926365.

The spelling of 195315619 in words is "one hundred ninety-five million, three hundred fifteen thousand, six hundred nineteen".