195936791 has 4 divisors (see below), whose sum is σ = 196931592. Its totient is φ = 194941992.

The previous prime is 195936787. The next prime is 195936803. The reversal of 195936791 is 197639591.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 195936791 - 2² = 195936787 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 (195936761) 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, 497105 + ... + 497498.

It is an arithmetic number, because the mean of its divisors is an integer number (49232898).

Almost surely, 2^195936791 is an apocalyptic number.

195936791 is a deficient number, since it is larger than the sum of its proper divisors (994801).

195936791 is an equidigital number, since it uses as much as digits as its factorization.

195936791 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 994800.

The product of its digits is 459270, while the sum is 50.

The square root of 195936791 is about 13997.7423536798. The cubic root of 195936791 is about 580.8161231839.

The spelling of 195936791 in words is "one hundred ninety-five million, nine hundred thirty-six thousand, seven hundred ninety-one".