195693291 has 6 divisors (see below), whose sum is σ = 282668100. Its totient is φ = 130462188.

The previous prime is 195693271. The next prime is 195693313. The reversal of 195693291 is 192396591.

It is a happy number.

It is not a de Polignac number, because 195693291 - 2⁶ = 195693227 is a prime.

It is not an unprimeable number, because it can be changed into a prime (195693221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10871841 + ... + 10871858.

It is an arithmetic number, because the mean of its divisors is an integer number (47111350).

Almost surely, 2^195693291 is an apocalyptic number.

195693291 is a deficient number, since it is larger than the sum of its proper divisors (86974809).

195693291 is a wasteful number, since it uses less digits than its factorization.

195693291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21743705 (or 21743702 counting only the distinct ones).

The product of its digits is 131220, while the sum is 45.

The square root of 195693291 is about 13989.0418185092. The cubic root of 195693291 is about 580.5754208082.

The spelling of 195693291 in words is "one hundred ninety-five million, six hundred ninety-three thousand, two hundred ninety-one".