18130200 has 192 divisors, whose sum is σ = 63745920. Its totient is φ = 4224000.

The previous prime is 18130193. The next prime is 18130213. The reversal of 18130200 is 203181.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 18130200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 270567 + ... + 270633.

It is an arithmetic number, because the mean of its divisors is an integer number (332010).

Almost surely, 2^18130200 is an apocalyptic number.

18130200 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 18130200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31872960).

18130200 is an abundant number, since it is smaller than the sum of its proper divisors (45615720).

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

18130200 is a wasteful number, since it uses less digits than its factorization.

18130200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 18130200 is about 4257.9572567136. The cubic root of 18130200 is about 262.7045118268.

Adding to 18130200 its reverse (203181), we get a palindrome (18333381).

It can be divided in two parts, 181 and 30200, that added together give a triangular number (30381 = T₂₄₆).

The spelling of 18130200 in words is "eighteen million, one hundred thirty thousand, two hundred".