18863166000 has 640 divisors, whose sum is σ = 76212264960. Its totient is φ = 3913728000.

The previous prime is 18863165963. The next prime is 18863166041. The reversal of 18863166000 is 66136881.

It is a self number, because there is not a number n which added to its sum of digits gives 18863166000.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 20705545 + ... + 20706455.

It is an arithmetic number, because the mean of its divisors is an integer number (119081664).

Almost surely, 2^18863166000 is an apocalyptic number.

18863166000 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 18863166000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38106132480).

18863166000 is an abundant number, since it is smaller than the sum of its proper divisors (57349098960).

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

18863166000 is a wasteful number, since it uses less digits than its factorization.

18863166000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990 (or 974 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The spelling of 18863166000 in words is "eighteen billion, eight hundred sixty-three million, one hundred sixty-six thousand".