195894317 has 6 divisors (see below), whose sum is σ = 201333258. Its totient is φ = 190598544.

The previous prime is 195894287. The next prime is 195894319. The reversal of 195894317 is 713498591.

It can be written as a sum of positive squares in 3 ways, for example, as 58277956 + 137616361 = 7634^2 + 11731^2 .

It is not a de Polignac number, because 195894317 - 2⁶ = 195894253 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 (195894319) 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, 70178 + ... + 72915.

It is an arithmetic number, because the mean of its divisors is an integer number (33555543).

Almost surely, 2^195894317 is an apocalyptic number.

It is an amenable number.

195894317 is a deficient number, since it is larger than the sum of its proper divisors (5438941).

195894317 is an equidigital number, since it uses as much as digits as its factorization.

195894317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143167 (or 143130 counting only the distinct ones).

The product of its digits is 272160, while the sum is 47.

The square root of 195894317 is about 13996.2250982184. The cubic root of 195894317 is about 580.7741515414.

The spelling of 195894317 in words is "one hundred ninety-five million, eight hundred ninety-four thousand, three hundred seventeen".