195868737 has 6 divisors (see below), whose sum is σ = 282921522. Its totient is φ = 130579152.

The previous prime is 195868727. The next prime is 195868769. The reversal of 195868737 is 737868591.

It can be written as a sum of positive squares in only one way, i.e., 161188416 + 34680321 = 12696^2 + 5889^2 .

It is not a de Polignac number, because 195868737 - 2⁴ = 195868721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (195868727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10881588 + ... + 10881605.

It is an arithmetic number, because the mean of its divisors is an integer number (47153587).

Almost surely, 2^195868737 is an apocalyptic number.

It is an amenable number.

195868737 is a deficient number, since it is larger than the sum of its proper divisors (87052785).

195868737 is a wasteful number, since it uses less digits than its factorization.

195868737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21763199 (or 21763196 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The square root of 195868737 is about 13995.3112505582. The cubic root of 195868737 is about 580.7488711594.

The spelling of 195868737 in words is "one hundred ninety-five million, eight hundred sixty-eight thousand, seven hundred thirty-seven".