18939028000 has 192 divisors, whose sum is σ = 48938722560. Its totient is φ = 7189248000.

The previous prime is 18939027937. The next prime is 18939028013. The reversal of 18939028000 is 82093981.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12787260 + ... + 12788740.

It is an arithmetic number, because the mean of its divisors is an integer number (254889180).

Almost surely, 2^18939028000 is an apocalyptic number.

18939028000 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 18939028000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24469361280).

18939028000 is an abundant number, since it is smaller than the sum of its proper divisors (29999694560).

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

18939028000 is a wasteful number, since it uses less digits than its factorization.

18939028000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668 (or 1650 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 40.

The spelling of 18939028000 in words is "eighteen billion, nine hundred thirty-nine million, twenty-eight thousand".