195639800 has 96 divisors (see below), whose sum is σ = 477090000. Its totient is φ = 74511360.

The previous prime is 195639797. The next prime is 195639841. The reversal of 195639800 is 8936591.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 516011 + ... + 516389.

Almost surely, 2^195639800 is an apocalyptic number.

195639800 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 195639800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (238545000).

195639800 is an abundant number, since it is smaller than the sum of its proper divisors (281450200).

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

195639800 is a wasteful number, since it uses less digits than its factorization.

195639800 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 513 (or 504 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 41.

The square root of 195639800 is about 13987.1297984969. The cubic root of 195639800 is about 580.5225176322.

The spelling of 195639800 in words is "one hundred ninety-five million, six hundred thirty-nine thousand, eight hundred".