195430144 has 72 divisors (see below), whose sum is σ = 480176480. Its totient is φ = 77303808.

The previous prime is 195430129. The next prime is 195430163. The reversal of 195430144 is 441034591.

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, 19102 + ... + 27490.

Almost surely, 2^195430144 is an apocalyptic number.

195430144 is a gapful number since it is divisible by the number (14) 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 195430144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240088240).

195430144 is an abundant number, since it is smaller than the sum of its proper divisors (284746336).

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

195430144 is an equidigital number, since it uses as much as digits as its factorization.

195430144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8425 (or 8411 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 195430144 is about 13979.6331854595. The cubic root of 195430144 is about 580.3150725700.

The spelling of 195430144 in words is "one hundred ninety-five million, four hundred thirty thousand, one hundred forty-four".