18198835200 has 1404 divisors, whose sum is σ = 84293646528. Its totient is φ = 3715891200.

The previous prime is 18198835183. The next prime is 18198835201. The reversal of 18198835200 is 253889181.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (18198835201) by changing a digit.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 587059185 + ... + 587059215.

Almost surely, 2^18198835200 is an apocalyptic number.

18198835200 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 18198835200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42146823264).

18198835200 is an abundant number, since it is smaller than the sum of its proper divisors (66094811328).

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

18198835200 is a wasteful number, since it uses less digits than its factorization.

18198835200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 61 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 45.

The spelling of 18198835200 in words is "eighteen billion, one hundred ninety-eight million, eight hundred thirty-five thousand, two hundred".