195651680 has 96 divisors (see below), whose sum is σ = 535719744. Its totient is φ = 66134016.

The previous prime is 195651679. The next prime is 195651697. The reversal of 195651680 is 86156591.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80564 + ... + 82956.

It is an arithmetic number, because the mean of its divisors is an integer number (5580414).

Almost surely, 2^195651680 is an apocalyptic number.

195651680 is a gapful number since it is divisible by the number (10) 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 195651680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (267859872).

195651680 is an abundant number, since it is smaller than the sum of its proper divisors (340068064).

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

195651680 is a wasteful number, since it uses less digits than its factorization.

195651680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2488 (or 2480 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 41.

The square root of 195651680 is about 13987.5544681692. The cubic root of 195651680 is about 580.5342679133.

The spelling of 195651680 in words is "one hundred ninety-five million, six hundred fifty-one thousand, six hundred eighty".