195354390 has 128 divisors (see below), whose sum is σ = 615444480. Its totient is φ = 38448000.

The previous prime is 195354389. The next prime is 195354403. The reversal of 195354390 is 93453591.

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, 41665 + ... + 46115.

It is an arithmetic number, because the mean of its divisors is an integer number (4808160).

Almost surely, 2^195354390 is an apocalyptic number.

195354390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 195354390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307722240).

195354390 is an abundant number, since it is smaller than the sum of its proper divisors (420090090).

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

195354390 is a wasteful number, since it uses less digits than its factorization.

195354390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4498.

The product of its (nonzero) digits is 72900, while the sum is 39.

The square root of 195354390 is about 13976.9234812243. The cubic root of 195354390 is about 580.2400809498.

The spelling of 195354390 in words is "one hundred ninety-five million, three hundred fifty-four thousand, three hundred ninety".