5618995866 has 32 divisors (see below), whose sum is σ = 13621809600. Its totient is φ = 1702725840.

The previous prime is 5618995853. The next prime is 5618995867. The reversal of 5618995866 is 6685998165.

5618995866 is a `hidden beast` number, since 5 + 618 + 9 + 9 + 5 + 8 + 6 + 6 = 666.

It is a super-2 number, since 2×5618995866² = 63146229084250179912, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5618995867) 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 15 ways as a sum of consecutive naturals, for example, 4729201 + ... + 4730388.

It is an arithmetic number, because the mean of its divisors is an integer number (425681550).

Almost surely, 2^5618995866 is an apocalyptic number.

5618995866 is an abundant number, since it is smaller than the sum of its proper divisors (8002813734).

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

5618995866 is a wasteful number, since it uses less digits than its factorization.

5618995866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9459611 (or 9459605 counting only the distinct ones).

The product of its digits is 27993600, while the sum is 63.

The square root of 5618995866 is about 74959.9617529251. The cubic root of 5618995866 is about 1777.8136547033.

It can be divided in two parts, 561899 and 5866, that added together give a palindrome (567765).

The spelling of 5618995866 in words is "five billion, six hundred eighteen million, nine hundred ninety-five thousand, eight hundred sixty-six".