2181488800 has 72 divisors (see below), whose sum is σ = 5605891200. Its totient is φ = 826663680.

The previous prime is 2181488791. The next prime is 2181488801. The reversal of 2181488800 is 88841812.

It is a hoax number, since the sum of its digits (40) 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 (40).

It is not an unprimeable number, because it can be changed into a prime (2181488801) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 56560 + ... + 86959.

It is an arithmetic number, because the mean of its divisors is an integer number (77859600).

Almost surely, 2^2181488800 is an apocalyptic number.

2181488800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2181488800 is an abundant number, since it is smaller than the sum of its proper divisors (3424402400).

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

2181488800 is a wasteful number, since it uses less digits than its factorization.

2181488800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143558 (or 143545 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 40.

The square root of 2181488800 is about 46706.4106948928. The cubic root of 2181488800 is about 1296.9333633578.

The spelling of 2181488800 in words is "two billion, one hundred eighty-one million, four hundred eighty-eight thousand, eight hundred".