18722829680 has 40 divisors (see below), whose sum is σ = 43538136000. Its totient is φ = 7487831808.

The previous prime is 18722829659. The next prime is 18722829683. The reversal of 18722829680 is 8692822781.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18722829683) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 539081 + ... + 572759.

It is an arithmetic number, because the mean of its divisors is an integer number (1088453400).

Almost surely, 2^18722829680 is an apocalyptic number.

18722829680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18722829680 is an abundant number, since it is smaller than the sum of its proper divisors (24815306320).

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

18722829680 is a wasteful number, since it uses less digits than its factorization.

18722829680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40641 (or 40635 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 53.

The spelling of 18722829680 in words is "eighteen billion, seven hundred twenty-two million, eight hundred twenty-nine thousand, six hundred eighty".