5518420444 has 18 divisors (see below), whose sum is σ = 9709452200. Its totient is φ = 2744302176.

The previous prime is 5518420399. The next prime is 5518420451. The reversal of 5518420444 is 4440248155.

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 2094552 + ... + 2097184.

Almost surely, 2^5518420444 is an apocalyptic number.

It is an amenable number.

5518420444 is a deficient number, since it is larger than the sum of its proper divisors (4191031756).

5518420444 is an equidigital number, since it uses as much as digits as its factorization.

5518420444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5469 (or 2834 counting only the distinct ones).

The product of its (nonzero) digits is 102400, while the sum is 37.

The square root of 5518420444 is about 74286.0716689205. The cubic root of 5518420444 is about 1767.1425955135.

Adding to 5518420444 its reverse (4440248155), we get a palindrome (9958668599).

The spelling of 5518420444 in words is "five billion, five hundred eighteen million, four hundred twenty thousand, four hundred forty-four".