5518831865 has 32 divisors (see below), whose sum is σ = 7056720000. Its totient is φ = 4131606528.

The previous prime is 5518831847. The next prime is 5518831867. The reversal of 5518831865 is 5681388155.

It is a cyclic number.

It is not a de Polignac number, because 5518831865 - 2¹⁴ = 5518815481 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5518831867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4648802 + ... + 4649988.

It is an arithmetic number, because the mean of its divisors is an integer number (220522500).

Almost surely, 2^5518831865 is an apocalyptic number.

It is an amenable number.

5518831865 is a deficient number, since it is larger than the sum of its proper divisors (1537888135).

5518831865 is a wasteful number, since it uses less digits than its factorization.

5518831865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1769.

The product of its digits is 1152000, while the sum is 50.

The square root of 5518831865 is about 74288.8407837947. The cubic root of 5518831865 is about 1767.1865103446.

The spelling of 5518831865 in words is "five billion, five hundred eighteen million, eight hundred thirty-one thousand, eight hundred sixty-five".