195965568 has 160 divisors (see below), whose sum is σ = 598710420. Its totient is φ = 63590400.

The previous prime is 195965533. The next prime is 195965587. The reversal of 195965568 is 865569591.

195965568 is a `hidden beast` number, since 19 + 5 + 9 + 65 + 568 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 169833024 + 26132544 = 13032^2 + 5112^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 424858 + ... + 425318.

Almost surely, 2^195965568 is an apocalyptic number.

195965568 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 195965568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299355210).

195965568 is an abundant number, since it is smaller than the sum of its proper divisors (402744852).

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

195965568 is an equidigital number, since it uses as much as digits as its factorization.

195965568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 528 (or 507 counting only the distinct ones).

The product of its digits is 2916000, while the sum is 54.

The square root of 195965568 is about 13998.7702317025. The cubic root of 195965568 is about 580.8445563796.

The spelling of 195965568 in words is "one hundred ninety-five million, nine hundred sixty-five thousand, five hundred sixty-eight".