2189062656 has 240 divisors, whose sum is σ = 7258062240. Its totient is φ = 628162560.

The previous prime is 2189062643. The next prime is 2189062661. The reversal of 2189062656 is 6562609812.

2189062656 is a `hidden beast` number, since 2 + 18 + 9 + 0 + 626 + 5 + 6 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 961936 + ... + 964208.

It is an arithmetic number, because the mean of its divisors is an integer number (30241926).

Almost surely, 2^2189062656 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 2189062656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3629031120).

2189062656 is an abundant number, since it is smaller than the sum of its proper divisors (5068999584).

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

2189062656 is a wasteful number, since it uses less digits than its factorization.

2189062656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2327 (or 2308 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 2189062656 is about 46787.4198476471. The cubic root of 2189062656 is about 1298.4325597756.

The spelling of 2189062656 in words is "two billion, one hundred eighty-nine million, sixty-two thousand, six hundred fifty-six".