195173913 has 16 divisors (see below), whose sum is σ = 284228352. Its totient is φ = 118146000.

The previous prime is 195173879. The next prime is 195173917. The reversal of 195173913 is 319371591.

It is not a de Polignac number, because 195173913 - 2¹⁰ = 195172889 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (195173917) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 28998 + ... + 35088.

It is an arithmetic number, because the mean of its divisors is an integer number (17764272).

Almost surely, 2^195173913 is an apocalyptic number.

It is an amenable number.

195173913 is a deficient number, since it is larger than the sum of its proper divisors (89054439).

195173913 is a wasteful number, since it uses less digits than its factorization.

195173913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7076.

The product of its digits is 25515, while the sum is 39.

The square root of 195173913 is about 13970.4657402679. The cubic root of 195173913 is about 580.0613421050.

The spelling of 195173913 in words is "one hundred ninety-five million, one hundred seventy-three thousand, nine hundred thirteen".