5518109618 has 48 divisors (see below), whose sum is σ = 10484899200. Its totient is φ = 2163157920.

The previous prime is 5518109603. The next prime is 5518109621. The reversal of 5518109618 is 8169018155.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2903 + ... + 105093.

It is an arithmetic number, because the mean of its divisors is an integer number (218435400).

Almost surely, 2^5518109618 is an apocalyptic number.

5518109618 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

5518109618 is a deficient number, since it is larger than the sum of its proper divisors (4966789582).

5518109618 is a wasteful number, since it uses less digits than its factorization.

5518109618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102255 (or 102248 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 44.

The square root of 5518109618 is about 74283.9795514484. The cubic root of 5518109618 is about 1767.1094166849.

The spelling of 5518109618 in words is "five billion, five hundred eighteen million, one hundred nine thousand, six hundred eighteen".