195613689 has 32 divisors (see below), whose sum is σ = 283852800. Its totient is φ = 119465280.

The previous prime is 195613687. The next prime is 195613697. The reversal of 195613689 is 986316591.

It is not a de Polignac number, because 195613689 - 2¹ = 195613687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (195613681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 232732 + ... + 233570.

It is an arithmetic number, because the mean of its divisors is an integer number (8870400).

Almost surely, 2^195613689 is an apocalyptic number.

It is an amenable number.

195613689 is a deficient number, since it is larger than the sum of its proper divisors (88239111).

195613689 is a wasteful number, since it uses less digits than its factorization.

195613689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1005.

The product of its digits is 349920, while the sum is 48.

The square root of 195613689 is about 13986.1963735678. The cubic root of 195613689 is about 580.4966900690.

The spelling of 195613689 in words is "one hundred ninety-five million, six hundred thirteen thousand, six hundred eighty-nine".