2281931568 has 480 divisors, whose sum is σ = 8210188800. Its totient is φ = 603542016.

The previous prime is 2281931557. The next prime is 2281931569. The reversal of 2281931568 is 8651391822.

2281931568 is a `hidden beast` number, since 2 + 2 + 81 + 9 + 3 + 1 + 568 = 666.

It is not an unprimeable number, because it can be changed into a prime (2281931569) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 20935098 + ... + 20935206.

It is an arithmetic number, because the mean of its divisors is an integer number (17104560).

Almost surely, 2^2281931568 is an apocalyptic number.

2281931568 is a gapful number since it is divisible by the number (28) 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 2281931568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4105094400).

2281931568 is an abundant number, since it is smaller than the sum of its proper divisors (5928257232).

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

2281931568 is a wasteful number, since it uses less digits than its factorization.

2281931568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 206 (or 187 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 2281931568 is about 47769.5673834294. The cubic root of 2281931568 is about 1316.5404449922.

The spelling of 2281931568 in words is "two billion, two hundred eighty-one million, nine hundred thirty-one thousand, five hundred sixty-eight".