195985872 has 40 divisors (see below), whose sum is σ = 562553280. Its totient is φ = 65328480.

The previous prime is 195985871. The next prime is 195985879. The reversal of 195985872 is 278589591.

195985872 is a `hidden beast` number, since 1 + 9 + 59 + 8 + 587 + 2 = 666.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195985871) 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, 226404 + ... + 227267.

It is an arithmetic number, because the mean of its divisors is an integer number (14063832).

Almost surely, 2^195985872 is an apocalyptic number.

195985872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

195985872 is an abundant number, since it is smaller than the sum of its proper divisors (366567408).

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

195985872 is a wasteful number, since it uses less digits than its factorization.

195985872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453688 (or 453676 counting only the distinct ones).

The product of its digits is 1814400, while the sum is 54.

The square root of 195985872 is about 13999.4954194785. The cubic root of 195985872 is about 580.8646161290.

The spelling of 195985872 in words is "one hundred ninety-five million, nine hundred eighty-five thousand, eight hundred seventy-two".