18803117000 has 64 divisors (see below), whose sum is σ = 44132999040. Its totient is φ = 7498392000.

The previous prime is 18803116963. The next prime is 18803117027. The reversal of 18803117000 is 71130881.

It is a super-4 number, since 4×18803117000⁴ (a number of 42 digits) contains 4444 as substring.

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 15 ways as a sum of consecutive naturals, for example, 302597 + ... + 359403.

It is an arithmetic number, because the mean of its divisors is an integer number (689578110).

Almost surely, 2^18803117000 is an apocalyptic number.

18803117000 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 18803117000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22066499520).

18803117000 is an abundant number, since it is smaller than the sum of its proper divisors (25329882040).

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

18803117000 is a wasteful number, since it uses less digits than its factorization.

18803117000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57159 (or 57145 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 29.

Adding to 18803117000 its reverse (71130881), we get a palindrome (18874247881).

The spelling of 18803117000 in words is "eighteen billion, eight hundred three million, one hundred seventeen thousand".