195679902 has 64 divisors (see below), whose sum is σ = 441656064. Its totient is φ = 57277440.

The previous prime is 195679873. The next prime is 195679937. The reversal of 195679902 is 209976591.

It is a congruent number.

It is an unprimeable number.

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, 554158 + ... + 554510.

It is an arithmetic number, because the mean of its divisors is an integer number (6900876).

Almost surely, 2^195679902 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 195679902, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220828032).

195679902 is an abundant number, since it is smaller than the sum of its proper divisors (245976162).

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

195679902 is a wasteful number, since it uses less digits than its factorization.

195679902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 633.

The product of its (nonzero) digits is 306180, while the sum is 48.

The square root of 195679902 is about 13988.5632571755. The cubic root of 195679902 is about 580.5621798474.

The spelling of 195679902 in words is "one hundred ninety-five million, six hundred seventy-nine thousand, nine hundred two".