195930913 has 4 divisors (see below), whose sum is σ = 197104320. Its totient is φ = 194757508.

The previous prime is 195930883. The next prime is 195930937. The reversal of 195930913 is 319039591.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 319039591 = 13 ⋅24541507.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-195930913 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a zygodrome in base 3.

It is not an unprimeable number, because it can be changed into a prime (195930953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 586453 + ... + 586786.

It is an arithmetic number, because the mean of its divisors is an integer number (49276080).

Almost surely, 2^195930913 is an apocalyptic number.

It is an amenable number.

195930913 is a deficient number, since it is larger than the sum of its proper divisors (1173407).

195930913 is a wasteful number, since it uses less digits than its factorization.

195930913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1173406.

The product of its (nonzero) digits is 32805, while the sum is 40.

The square root of 195930913 is about 13997.5323896750. The cubic root of 195930913 is about 580.8103150670.

The spelling of 195930913 in words is "one hundred ninety-five million, nine hundred thirty thousand, nine hundred thirteen".