195741840 has 320 divisors, whose sum is σ = 738238464. Its totient is φ = 41969664.

The previous prime is 195741823. The next prime is 195741911. The reversal of 195741840 is 48147591.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2921487 + ... + 2921553.

Almost surely, 2^195741840 is an apocalyptic number.

195741840 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 195741840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (369119232).

195741840 is an abundant number, since it is smaller than the sum of its proper divisors (542496624).

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

195741840 is a wasteful number, since it uses less digits than its factorization.

195741840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174 (or 168 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 195741840 is about 13990.7769619846. The cubic root of 195741840 is about 580.6234279480.

The spelling of 195741840 in words is "one hundred ninety-five million, seven hundred forty-one thousand, eight hundred forty".