189789792822 has 72 divisors (see below), whose sum is σ = 496064388456. Its totient is φ = 54225648288.

The previous prime is 189789792809. The next prime is 189789792823. The reversal of 189789792822 is 228297987981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (189789792823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3961023 + ... + 4008650.

It is an arithmetic number, because the mean of its divisors is an integer number (6889783173).

Almost surely, 2^189789792822 is an apocalyptic number.

189789792822 is an abundant number, since it is smaller than the sum of its proper divisors (306274595634).

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

189789792822 is an equidigital number, since it uses as much as digits as its factorization.

189789792822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7969704 (or 7969685 counting only the distinct ones).

The product of its digits is 146313216, while the sum is 72.

The spelling of 189789792822 in words is "one hundred eighty-nine billion, seven hundred eighty-nine million, seven hundred ninety-two thousand, eight hundred twenty-two".