195881880 has 64 divisors (see below), whose sum is σ = 594280800. Its totient is φ = 51645440.

The previous prime is 195881867. The next prime is 195881891. The reversal of 195881880 is 88188591.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its 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, 1510 + ... + 19850.

Almost surely, 2^195881880 is an apocalyptic number.

195881880 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 195881880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297140400).

195881880 is an abundant number, since it is smaller than the sum of its proper divisors (398398920).

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

195881880 is a wasteful number, since it uses less digits than its factorization.

195881880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18444 (or 18440 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 48.

The square root of 195881880 is about 13995.7807927961. The cubic root of 195881880 is about 580.7618604906.

It can be divided in two parts, 1958 and 81880, that added together give a palindrome (83838).

The spelling of 195881880 in words is "one hundred ninety-five million, eight hundred eighty-one thousand, eight hundred eighty".