4518018 has 30 divisors (see below), whose sum is σ = 10184691. Its totient is φ = 1496988.

The previous prime is 4517999. The next prime is 4518023. The reversal of 4518018 is 8108154.

It can be written as a sum of positive squares in only one way, i.e., 2259009 + 2259009 = 1503^2 + 1503^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=1503.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 4517982 and 4518000.

It is an unprimeable number.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 26971 + ... + 27137.

Almost surely, 2^4518018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4518018

4518018 is an abundant number, since it is smaller than the sum of its proper divisors (5666673).

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

4518018 is an equidigital number, since it uses as much as digits as its factorization.

4518018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348 (or 172 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 27.

The square root of 4518018 is about 2125.5629842468. The cubic root of 4518018 is about 165.3164176170.

The spelling of 4518018 in words is "four million, five hundred eighteen thousand, eighteen".