18139737000 has 512 divisors, whose sum is σ = 74292940800. Its totient is φ = 3570048000.

The previous prime is 18139736999. The next prime is 18139737023. The reversal of 18139737000 is 73793181.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18139737000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 4386934 + ... + 4391066.

It is an arithmetic number, because the mean of its divisors is an integer number (145103400).

Almost surely, 2^18139737000 is an apocalyptic number.

18139737000 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 18139737000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37146470400).

18139737000 is an abundant number, since it is smaller than the sum of its proper divisors (56153203800).

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

18139737000 is a wasteful number, since it uses less digits than its factorization.

18139737000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4194 (or 4180 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 39.

The spelling of 18139737000 in words is "eighteen billion, one hundred thirty-nine million, seven hundred thirty-seven thousand".