195961938 has 16 divisors (see below), whose sum is σ = 392125536. Its totient is φ = 65287040.

The previous prime is 195961937. The next prime is 195961939. The reversal of 195961938 is 839169591.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (195961937) and next prime (195961939).

It is a super-2 number, since 2×195961938² = 76802162289431688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (195961937) 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 7 ways as a sum of consecutive naturals, for example, 6178 + ... + 20738.

It is an arithmetic number, because the mean of its divisors is an integer number (24507846).

Almost surely, 2^195961938 is an apocalyptic number.

195961938 is an abundant number, since it is smaller than the sum of its proper divisors (196163598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

195961938 is a wasteful number, since it uses less digits than its factorization.

195961938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16809.

The product of its digits is 524880, while the sum is 51.

The square root of 195961938 is about 13998.6405768560. The cubic root of 195961938 is about 580.8409699013.

The spelling of 195961938 in words is "one hundred ninety-five million, nine hundred sixty-one thousand, nine hundred thirty-eight".