18318836200 has 288 divisors, whose sum is σ = 54166890240. Its totient is φ = 5718988800.

The previous prime is 18318836189. The next prime is 18318836227. The reversal of 18318836200 is 263881381.

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

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5162827 + ... + 5166373.

It is an arithmetic number, because the mean of its divisors is an integer number (188079480).

Almost surely, 2^18318836200 is an apocalyptic number.

18318836200 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 18318836200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27083445120).

18318836200 is an abundant number, since it is smaller than the sum of its proper divisors (35848054040).

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

18318836200 is a wasteful number, since it uses less digits than its factorization.

18318836200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3625 (or 3609 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 40.

The spelling of 18318836200 in words is "eighteen billion, three hundred eighteen million, eight hundred thirty-six thousand, two hundred".