195195863 has 2 divisors, whose sum is σ = 195195864. Its totient is φ = 195195862.

The previous prime is 195195859. The next prime is 195195899. The reversal of 195195863 is 368591591.

It is a weak prime.

It is an emirp because it is prime and its reverse (368591591) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 195195863 - 2² = 195195859 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (195195823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97597931 + 97597932.

It is an arithmetic number, because the mean of its divisors is an integer number (97597932).

Almost surely, 2^195195863 is an apocalyptic number.

195195863 is a deficient number, since it is larger than the sum of its proper divisors (1).

195195863 is an equidigital number, since it uses as much as digits as its factorization.

195195863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 291600, while the sum is 47.

The square root of 195195863 is about 13971.2513040171. The cubic root of 195195863 is about 580.0830865909.

The spelling of 195195863 in words is "one hundred ninety-five million, one hundred ninety-five thousand, eight hundred sixty-three".