195902217 has 24 divisors (see below), whose sum is σ = 340416960. Its totient is φ = 106051680.

The previous prime is 195902207. The next prime is 195902219. The reversal of 195902217 is 712209591.

It is not a de Polignac number, because 195902217 - 2⁷ = 195902089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (195902219) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 80634 + ... + 83027.

It is an arithmetic number, because the mean of its divisors is an integer number (14184040).

Almost surely, 2^195902217 is an apocalyptic number.

It is an amenable number.

195902217 is a deficient number, since it is larger than the sum of its proper divisors (144514743).

195902217 is a wasteful number, since it uses less digits than its factorization.

195902217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163693 (or 163690 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The square root of 195902217 is about 13996.5073143267. The cubic root of 195902217 is about 580.7819585641.

The spelling of 195902217 in words is "one hundred ninety-five million, nine hundred two thousand, two hundred seventeen".