18208878000 has 320 divisors, whose sum is σ = 62170068480. Its totient is φ = 4572288000.

The previous prime is 18208877987. The next prime is 18208878011. The reversal of 18208878000 is 87880281.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 24053622 + ... + 24054378.

It is an arithmetic number, because the mean of its divisors is an integer number (194281464).

Almost surely, 2^18208878000 is an apocalyptic number.

18208878000 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 18208878000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31085034240).

18208878000 is an abundant number, since it is smaller than the sum of its proper divisors (43961190480).

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

18208878000 is a wasteful number, since it uses less digits than its factorization.

18208878000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1013 (or 997 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 42.

The spelling of 18208878000 in words is "eighteen billion, two hundred eight million, eight hundred seventy-eight thousand".