5680531818 has 24 divisors (see below), whose sum is σ = 13254574788. Its totient is φ = 1747855872.

The previous prime is 5680531811. The next prime is 5680531841. The reversal of 5680531818 is 8181350865.

5680531818 is a `hidden beast` number, since 568 + 0 + 5 + 3 + 1 + 81 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 5557255209 + 123276609 = 74547^2 + 11103^2 .

It is not an unprimeable number, because it can be changed into a prime (5680531811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12137655 + ... + 12138122.

Almost surely, 2^5680531818 is an apocalyptic number.

5680531818 is an abundant number, since it is smaller than the sum of its proper divisors (7574042970).

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

5680531818 is a wasteful number, since it uses less digits than its factorization.

5680531818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24275798 (or 24275795 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 45.

The square root of 5680531818 is about 75369.3028891737. The cubic root of 5680531818 is about 1784.2799647513.

The spelling of 5680531818 in words is "five billion, six hundred eighty million, five hundred thirty-one thousand, eight hundred eighteen".