8172993822 has 128 divisors (see below), whose sum is σ = 19680460800. Its totient is φ = 2213827200.

The previous prime is 8172993809. The next prime is 8172993859. The reversal of 8172993822 is 2283992718.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18617079 + ... + 18617517.

It is an arithmetic number, because the mean of its divisors is an integer number (153753600).

Almost surely, 2^8172993822 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8172993822, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9840230400).

8172993822 is an abundant number, since it is smaller than the sum of its proper divisors (11507466978).

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

8172993822 is a wasteful number, since it uses less digits than its factorization.

8172993822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 742.

The product of its digits is 870912, while the sum is 51.

The square root of 8172993822 is about 90404.6117297121. The cubic root of 8172993822 is about 2014.3134697520.

It can be divided in two parts, 817299 and 3822, that added together give a triangular number (821121 = T₁₂₈₁).

The spelling of 8172993822 in words is "eight billion, one hundred seventy-two million, nine hundred ninety-three thousand, eight hundred twenty-two".