195830668191 has 8 divisors (see below), whose sum is σ = 261340071040. Its totient is φ = 130437522072.

The previous prime is 195830668183. The next prime is 195830668193. The reversal of 195830668191 is 191866038591.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 195830668191 - 2³ = 195830668183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195830668193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29060251 + ... + 29066988.

It is an arithmetic number, because the mean of its divisors is an integer number (32667508880).

Almost surely, 2^195830668191 is an apocalyptic number.

195830668191 is a deficient number, since it is larger than the sum of its proper divisors (65509402849).

195830668191 is a wasteful number, since it uses less digits than its factorization.

195830668191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58128365.

The product of its (nonzero) digits is 2799360, while the sum is 57.

The spelling of 195830668191 in words is "one hundred ninety-five billion, eight hundred thirty million, six hundred sixty-eight thousand, one hundred ninety-one".