5811867648 has 156 divisors (see below), whose sum is σ = 17245560748. Its totient is φ = 1884487680.

The previous prime is 5811867623. The next prime is 5811867689. The reversal of 5811867648 is 8467681185.

It is a happy number.

5811867648 is a `hidden beast` number, since 581 + 18 + 6 + 7 + 6 + 48 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5435817984 + 376049664 = 73728^2 + 19392^2 .

It is a junction number, because it is equal to n+sod(n) for n = 5811867594 and 5811867603.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1361838 + ... + 1366098.

Almost surely, 2^5811867648 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 5811867648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8622780374).

5811867648 is an abundant number, since it is smaller than the sum of its proper divisors (11433693100).

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

5811867648 is a wasteful number, since it uses less digits than its factorization.

5811867648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4328 (or 4303 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 54.

The square root of 5811867648 is about 76235.6061692960. The cubic root of 5811867648 is about 1797.9263824601.

The spelling of 5811867648 in words is "five billion, eight hundred eleven million, eight hundred sixty-seven thousand, six hundred forty-eight".