195638814 has 112 divisors (see below), whose sum is σ = 520967520. Its totient is φ = 53887680.

The previous prime is 195638803. The next prime is 195638819. The reversal of 195638814 is 418836591.

195638814 is a `hidden beast` number, since 1 + 9 + 5 + 638 + 8 + 1 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 195638814.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195638819) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 295644 + ... + 296304.

Almost surely, 2^195638814 is an apocalyptic number.

195638814 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 195638814, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260483760).

195638814 is an abundant number, since it is smaller than the sum of its proper divisors (325328706).

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

195638814 is an equidigital number, since it uses as much as digits as its factorization.

195638814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 717 (or 702 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 195638814 is about 13987.0945517645. The cubic root of 195638814 is about 580.5215423770.

The spelling of 195638814 in words is "one hundred ninety-five million, six hundred thirty-eight thousand, eight hundred fourteen".