2189555712 has 240 divisors, whose sum is σ = 6671344680. Its totient is φ = 715309056.

The previous prime is 2189555701. The next prime is 2189555729. The reversal of 2189555712 is 2175559812.

2189555712 is a `hidden beast` number, since 2 + 1 + 8 + 95 + 557 + 1 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11114398 + ... + 11114594.

Almost surely, 2^2189555712 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2189555712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3335672340).

2189555712 is an abundant number, since it is smaller than the sum of its proper divisors (4481788968).

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

2189555712 is an equidigital number, since it uses as much as digits as its factorization.

2189555712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298 (or 269 counting only the distinct ones).

The product of its digits is 252000, while the sum is 45.

The square root of 2189555712 is about 46792.6886596614. The cubic root of 2189555712 is about 1298.5300370989.

The spelling of 2189555712 in words is "two billion, one hundred eighty-nine million, five hundred fifty-five thousand, seven hundred twelve".