2618816256 has 216 divisors, whose sum is σ = 8754729984. Its totient is φ = 737372160.

The previous prime is 2618816243. The next prime is 2618816257. The reversal of 2618816256 is 6526188162.

2618816256 is a `hidden beast` number, since 2 + 6 + 18 + 8 + 1 + 625 + 6 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2618816257) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1143945 + ... + 1146231.

Almost surely, 2^2618816256 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 2618816256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4377364992).

2618816256 is an abundant number, since it is smaller than the sum of its proper divisors (6135913728).

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

2618816256 is a wasteful number, since it uses less digits than its factorization.

2618816256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2387 (or 2370 counting only the distinct ones).

The product of its digits is 276480, while the sum is 45.

The square root of 2618816256 is about 51174.3710855346. The cubic root of 2618816256 is about 1378.3780313710.

The spelling of 2618816256 in words is "two billion, six hundred eighteen million, eight hundred sixteen thousand, two hundred fifty-six".