5831981856 has 120 divisors (see below), whose sum is σ = 17276157360. Its totient is φ = 1929889152.

The previous prime is 5831981851. The next prime is 5831981863. The reversal of 5831981856 is 6581891385.

5831981856 is a `hidden beast` number, since 583 + 1 + 9 + 8 + 1 + 8 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (5831981851) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 352195 + ... + 368381.

It is an arithmetic number, because the mean of its divisors is an integer number (143967978).

Almost surely, 2^5831981856 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 5831981856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8638078680).

5831981856 is an abundant number, since it is smaller than the sum of its proper divisors (11444175504).

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

5831981856 is a wasteful number, since it uses less digits than its factorization.

5831981856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16348 (or 16331 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 54.

The square root of 5831981856 is about 76367.4135741155. The cubic root of 5831981856 is about 1799.9981333314.

The spelling of 5831981856 in words is "five billion, eight hundred thirty-one million, nine hundred eighty-one thousand, eight hundred fifty-six".