18783298560 has 352 divisors, whose sum is σ = 65367751680. Its totient is φ = 4575854592.

The previous prime is 18783298543. The next prime is 18783298561. The reversal of 18783298560 is 6589238781.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18783298560.

It is not an unprimeable number, because it can be changed into a prime (18783298561) 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, 21764689 + ... + 21765551.

It is an arithmetic number, because the mean of its divisors is an integer number (185703840).

Almost surely, 2^18783298560 is an apocalyptic number.

18783298560 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 18783298560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32683875840).

18783298560 is an abundant number, since it is smaller than the sum of its proper divisors (46584453120).

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

18783298560 is a wasteful number, since it uses less digits than its factorization.

18783298560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1013 (or 995 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 57.

The spelling of 18783298560 in words is "eighteen billion, seven hundred eighty-three million, two hundred ninety-eight thousand, five hundred sixty".