5518685000 has 40 divisors (see below), whose sum is σ = 12930290670. Its totient is φ = 2207472000.

The previous prime is 5518684991. The next prime is 5518685041. The reversal of 5518685000 is 5868155.

It can be written as a sum of positive squares in 5 ways, for example, as 100841764 + 5417843236 = 10042^2 + 73606^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 546869 + ... + 556868.

Almost surely, 2^5518685000 is an apocalyptic number.

5518685000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

5518685000 is an abundant number, since it is smaller than the sum of its proper divisors (7411605670).

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

5518685000 is a wasteful number, since it uses less digits than its factorization.

5518685000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103763 (or 1103744 counting only the distinct ones).

The product of its (nonzero) digits is 48000, while the sum is 38.

The square root of 5518685000 is about 74287.8523043977. The cubic root of 5518685000 is about 1767.1708343130.

The spelling of 5518685000 in words is "five billion, five hundred eighteen million, six hundred eighty-five thousand".