18499813200 has 360 divisors, whose sum is σ = 70256634240. Its totient is φ = 4470681600.

The previous prime is 18499813093. The next prime is 18499813207. The reversal of 18499813200 is 231899481.

It is a tau number, because it is divible by the number of its divisors (360).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18499813207) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 18334296 + ... + 18335304.

Almost surely, 2^18499813200 is an apocalyptic number.

18499813200 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 18499813200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35128317120).

18499813200 is an abundant number, since it is smaller than the sum of its proper divisors (51756821040).

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

18499813200 is a wasteful number, since it uses less digits than its factorization.

18499813200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1507 (or 1493 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The spelling of 18499813200 in words is "eighteen billion, four hundred ninety-nine million, eight hundred thirteen thousand, two hundred".