195831957 has 16 divisors (see below), whose sum is σ = 264176640. Its totient is φ = 129030000.

The previous prime is 195831947. The next prime is 195831967. The reversal of 195831957 is 759138591.

It is an interprime number because it is at equal distance from previous prime (195831947) and next prime (195831967).

It is not a de Polignac number, because 195831957 - 2⁴ = 195831941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195831947) 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 15 ways as a sum of consecutive naturals, for example, 103732 + ... + 105602.

It is an arithmetic number, because the mean of its divisors is an integer number (16511040).

Almost surely, 2^195831957 is an apocalyptic number.

It is an amenable number.

195831957 is a deficient number, since it is larger than the sum of its proper divisors (68344683).

195831957 is a wasteful number, since it uses less digits than its factorization.

195831957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2264.

The product of its digits is 340200, while the sum is 48.

The square root of 195831957 is about 13993.9971773614. The cubic root of 195831957 is about 580.7125181049.

The spelling of 195831957 in words is "one hundred ninety-five million, eight hundred thirty-one thousand, nine hundred fifty-seven".