195968885 has 12 divisors (see below), whose sum is σ = 273556908. Its totient is φ = 134378496.

The previous prime is 195968879. The next prime is 195968923. The reversal of 195968885 is 588869591.

It can be written as a sum of positive squares in 2 ways, for example, as 65141041 + 130827844 = 8071^2 + 11438^2 .

It is not a de Polignac number, because 195968885 - 2¹⁰ = 195967861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 399692 + ... + 400181.

It is an arithmetic number, because the mean of its divisors is an integer number (22796409).

Almost surely, 2^195968885 is an apocalyptic number.

It is an amenable number.

195968885 is a deficient number, since it is larger than the sum of its proper divisors (77588023).

195968885 is an equidigital number, since it uses as much as digits as its factorization.

195968885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 799892 (or 799885 counting only the distinct ones).

The product of its digits is 6220800, while the sum is 59.

The square root of 195968885 is about 13998.8887058938. Note that the first 3 decimals coincide. The cubic root of 195968885 is about 580.8478335718.

The spelling of 195968885 in words is "one hundred ninety-five million, nine hundred sixty-eight thousand, eight hundred eighty-five".