195961923 has 20 divisors (see below), whose sum is σ = 294886680. Its totient is φ = 129680352.

The previous prime is 195961901. The next prime is 195961937. The reversal of 195961923 is 329169591.

It is a happy number.

195961923 is a `hidden beast` number, since 1 + 9 + 5 + 9 + 619 + 23 = 666.

It is not a de Polignac number, because 195961923 - 2⁶ = 195961859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (195961973) 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 19 ways as a sum of consecutive naturals, for example, 2268 + ... + 19926.

It is an arithmetic number, because the mean of its divisors is an integer number (14744334).

Almost surely, 2^195961923 is an apocalyptic number.

195961923 is a deficient number, since it is larger than the sum of its proper divisors (98924757).

195961923 is a wasteful number, since it uses less digits than its factorization.

195961923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17808 (or 17799 counting only the distinct ones).

The product of its digits is 131220, while the sum is 45.

The square root of 195961923 is about 13998.6400410897. The cubic root of 195961923 is about 580.8409550810.

The spelling of 195961923 in words is "one hundred ninety-five million, nine hundred sixty-one thousand, nine hundred twenty-three".