2187801360 has 160 divisors (see below), whose sum is σ = 7932528000. Its totient is φ = 552697344.

The previous prime is 2187801359. The next prime is 2187801443. The reversal of 2187801360 is 631087812.

2187801360 is a `hidden beast` number, since 218 + 7 + 80 + 1 + 360 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14386 + ... + 67694.

It is an arithmetic number, because the mean of its divisors is an integer number (49578300).

Almost surely, 2^2187801360 is an apocalyptic number.

2187801360 is a gapful number since it is divisible by the number (20) 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 2187801360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3966264000).

2187801360 is an abundant number, since it is smaller than the sum of its proper divisors (5744726640).

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

2187801360 is a wasteful number, since it uses less digits than its factorization.

2187801360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53350 (or 53338 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 2187801360 is about 46773.9388976383. The cubic root of 2187801360 is about 1298.1831345359.

The spelling of 2187801360 in words is "two billion, one hundred eighty-seven million, eight hundred one thousand, three hundred sixty".