1984681254822 has 192 divisors, whose sum is σ = 5054641367040. Its totient is φ = 515671833600.

The previous prime is 1984681254757. The next prime is 1984681254823. The reversal of 1984681254822 is 2284521864891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1984681254823) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 102404329 + ... + 102423707.

It is an arithmetic number, because the mean of its divisors is an integer number (26326257120).

Almost surely, 2^{1984681254822} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1984681254822, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2527320683520).

1984681254822 is an abundant number, since it is smaller than the sum of its proper divisors (3069960112218).

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

1984681254822 is a wasteful number, since it uses less digits than its factorization.

1984681254822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20107 (or 20100 counting only the distinct ones).

The product of its digits is 17694720, while the sum is 60.

The spelling of 1984681254822 in words is "one trillion, nine hundred eighty-four billion, six hundred eighty-one million, two hundred fifty-four thousand, eight hundred twenty-two".