18383218983800 has 192 divisors, whose sum is σ = 48727686585600. Its totient is φ = 6384448716800.

The previous prime is 18383218983797. The next prime is 18383218983881. The reversal of 18383218983800 is 838981238381.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 33069752 + ... + 33621048.

It is an arithmetic number, because the mean of its divisors is an integer number (253790034300).

Almost surely, 2^{18383218983800} is an apocalyptic number.

18383218983800 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 18383218983800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24363843292800).

18383218983800 is an abundant number, since it is smaller than the sum of its proper divisors (30344467601800).

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

18383218983800 is a wasteful number, since it uses less digits than its factorization.

18383218983800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552006 (or 551997 counting only the distinct ones).

The product of its (nonzero) digits is 15925248, while the sum is 62.

The spelling of 18383218983800 in words is "eighteen trillion, three hundred eighty-three billion, two hundred eighteen million, nine hundred eighty-three thousand, eight hundred".