195929980 has 24 divisors (see below), whose sum is σ = 421490160. Its totient is φ = 76460160.

The previous prime is 195929977. The next prime is 195930017. The reversal of 195929980 is 89929591.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118650 + ... + 120289.

It is an arithmetic number, because the mean of its divisors is an integer number (17562090).

Almost surely, 2^195929980 is an apocalyptic number.

195929980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

195929980 is an abundant number, since it is smaller than the sum of its proper divisors (225560180).

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

195929980 is a wasteful number, since it uses less digits than its factorization.

195929980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 238989 (or 238987 counting only the distinct ones).

The product of its (nonzero) digits is 524880, while the sum is 52.

The square root of 195929980 is about 13997.4990623325. The cubic root of 195929980 is about 580.8093931487.

The spelling of 195929980 in words is "one hundred ninety-five million, nine hundred twenty-nine thousand, nine hundred eighty".