18203458900 has 144 divisors (see below), whose sum is σ = 45829566720. Its totient is φ = 6202470400.

The previous prime is 18203458853. The next prime is 18203458901. The reversal of 18203458900 is 985430281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18203458901) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4467264 + ... + 4471336.

It is an arithmetic number, because the mean of its divisors is an integer number (318260880).

Almost surely, 2^18203458900 is an apocalyptic number.

18203458900 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 18203458900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22914783360).

18203458900 is an abundant number, since it is smaller than the sum of its proper divisors (27626107820).

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

18203458900 is a wasteful number, since it uses less digits than its factorization.

18203458900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4354 (or 4347 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The spelling of 18203458900 in words is "eighteen billion, two hundred three million, four hundred fifty-eight thousand, nine hundred".