195389040 has 320 divisors, whose sum is σ = 769950720. Its totient is φ = 39813120.

The previous prime is 195389023. The next prime is 195389059. The reversal of 195389040 is 40983591.

195389040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 195389040.

It is a congruent number.

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, 1792506 + ... + 1792614.

It is an arithmetic number, because the mean of its divisors is an integer number (2406096).

Almost surely, 2^195389040 is an apocalyptic number.

195389040 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 195389040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (384975360).

195389040 is an abundant number, since it is smaller than the sum of its proper divisors (574561680).

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

195389040 is a wasteful number, since it uses less digits than its factorization.

195389040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240 (or 234 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 195389040 is about 13978.1629694320. The cubic root of 195389040 is about 580.2743846414.

The spelling of 195389040 in words is "one hundred ninety-five million, three hundred eighty-nine thousand, forty".