18481251200 has 96 divisors (see below), whose sum is σ = 45761033160. Its totient is φ = 7375247360.

The previous prime is 18481251199. The next prime is 18481251241. The reversal of 18481251200 is 215218481.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1411082 + ... + 1424118.

Almost surely, 2^18481251200 is an apocalyptic number.

18481251200 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 18481251200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22880516580).

18481251200 is an abundant number, since it is smaller than the sum of its proper divisors (27279781960).

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

18481251200 is a wasteful number, since it uses less digits than its factorization.

18481251200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13504 (or 13487 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 32.

Adding to 18481251200 its reverse (215218481), we get a palindrome (18696469681).

The spelling of 18481251200 in words is "eighteen billion, four hundred eighty-one million, two hundred fifty-one thousand, two hundred".