18219851360 has 96 divisors (see below), whose sum is σ = 44428849920. Its totient is φ = 7057239552.

The previous prime is 18219851311. The next prime is 18219851387. The reversal of 18219851360 is 6315891281.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 618077 + ... + 646883.

It is an arithmetic number, because the mean of its divisors is an integer number (462800520).

Almost surely, 2^18219851360 is an apocalyptic number.

18219851360 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 18219851360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22214424960).

18219851360 is an abundant number, since it is smaller than the sum of its proper divisors (26208998560).

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

18219851360 is a wasteful number, since it uses less digits than its factorization.

18219851360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28948 (or 28940 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 44.

The spelling of 18219851360 in words is "eighteen billion, two hundred nineteen million, eight hundred fifty-one thousand, three hundred sixty".