195208715 has 24 divisors (see below), whose sum is σ = 261341808. Its totient is φ = 139144320.

The previous prime is 195208693. The next prime is 195208729. The reversal of 195208715 is 517802591.

It is not a de Polignac number, because 195208715 - 2¹⁸ = 194946571 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 52880 + ... + 56450.

It is an arithmetic number, because the mean of its divisors is an integer number (10889242).

Almost surely, 2^195208715 is an apocalyptic number.

195208715 is a deficient number, since it is larger than the sum of its proper divisors (66133093).

195208715 is a wasteful number, since it uses less digits than its factorization.

195208715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3647 (or 3618 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 38.

The square root of 195208715 is about 13971.7112409325. The cubic root of 195208715 is about 580.0958175032.

The spelling of 195208715 in words is "one hundred ninety-five million, two hundred eight thousand, seven hundred fifteen".