195638716 has 48 divisors (see below), whose sum is σ = 431686080. Its totient is φ = 75502080.

The previous prime is 195638711. The next prime is 195638743. The reversal of 195638716 is 617836591.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195638711) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8370 + ... + 21478.

It is an arithmetic number, because the mean of its divisors is an integer number (8993460).

Almost surely, 2^195638716 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 195638716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215843040).

195638716 is an abundant number, since it is smaller than the sum of its proper divisors (236047364).

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

195638716 is a wasteful number, since it uses less digits than its factorization.

195638716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13174 (or 13172 counting only the distinct ones).

The product of its digits is 272160, while the sum is 46.

The square root of 195638716 is about 13987.0910485347. The cubic root of 195638716 is about 580.5214454448.

The spelling of 195638716 in words is "one hundred ninety-five million, six hundred thirty-eight thousand, seven hundred sixteen".