18329529680 has 160 divisors (see below), whose sum is σ = 53516574720. Its totient is φ = 5671733760.

The previous prime is 18329529649. The next prime is 18329529689. The reversal of 18329529680 is 8692592381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18329529689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 845537 + ... + 866943.

It is an arithmetic number, because the mean of its divisors is an integer number (334478592).

Almost surely, 2^18329529680 is an apocalyptic number.

18329529680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18329529680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26758287360).

18329529680 is an abundant number, since it is smaller than the sum of its proper divisors (35187045040).

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

18329529680 is a wasteful number, since it uses less digits than its factorization.

18329529680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21577 (or 21571 counting only the distinct ones).

The product of its (nonzero) digits is 1866240, while the sum is 53.

The spelling of 18329529680 in words is "eighteen billion, three hundred twenty-nine million, five hundred twenty-nine thousand, six hundred eighty".