5518308018 has 32 divisors (see below), whose sum is σ = 11799305856. Its totient is φ = 1714422528.

The previous prime is 5518307989. The next prime is 5518308049. The reversal of 5518308018 is 8108038155.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252121 + ... + 273132.

It is an arithmetic number, because the mean of its divisors is an integer number (368728308).

Almost surely, 2^5518308018 is an apocalyptic number.

5518308018 is an abundant number, since it is smaller than the sum of its proper divisors (6280997838).

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

5518308018 is a wasteful number, since it uses less digits than its factorization.

5518308018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 525378.

The product of its (nonzero) digits is 38400, while the sum is 39.

The square root of 5518308018 is about 74285.3149552454. The cubic root of 5518308018 is about 1767.1305948498.

The spelling of 5518308018 in words is "five billion, five hundred eighteen million, three hundred eight thousand, eighteen".