195889820456 has 24 divisors (see below), whose sum is σ = 403719208410. Its totient is φ = 89040827040.

The previous prime is 195889820453. The next prime is 195889820549. The reversal of 195889820456 is 654028988591.

It can be written as a sum of positive squares in only one way, i.e., 194627439556 + 1262380900 = 441166^2 + 35530^2 .

It is a junction number, because it is equal to n+sod(n) for n = 195889820392 and 195889820401.

It is not an unprimeable number, because it can be changed into a prime (195889820453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 101181791 + ... + 101183726.

Almost surely, 2^195889820456 is an apocalyptic number.

It is an amenable number.

195889820456 is an abundant number, since it is smaller than the sum of its proper divisors (207829387954).

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

195889820456 is a wasteful number, since it uses less digits than its factorization.

195889820456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202365545 (or 202365530 counting only the distinct ones).

The product of its (nonzero) digits is 49766400, while the sum is 65.

The spelling of 195889820456 in words is "one hundred ninety-five billion, eight hundred eighty-nine million, eight hundred twenty thousand, four hundred fifty-six".