18888790016 has 52 divisors (see below), whose sum is σ = 38305571904. Its totient is φ = 9311232000.

The previous prime is 18888790007. The next prime is 18888790027. The reversal of 18888790016 is 61009788881.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 258341 + ... + 323291.

Almost surely, 2^18888790016 is an apocalyptic number.

18888790016 is a gapful number since it is divisible by the number (16) 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 18888790016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19152785952).

18888790016 is an abundant number, since it is smaller than the sum of its proper divisors (19416781888).

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

18888790016 is an frugal number, since it uses more digits than its factorization.

18888790016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65046 (or 65024 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 56.

The spelling of 18888790016 in words is "eighteen billion, eight hundred eighty-eight million, seven hundred ninety thousand, sixteen".