4581018 has 24 divisors (see below), whose sum is σ = 10689588. Its totient is φ = 1409472.

The previous prime is 4581011. The next prime is 4581037. The reversal of 4581018 is 8101854.

It can be written as a sum of positive squares in 2 ways, for example, as 4549689 + 31329 = 2133^2 + 177^2 .

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4580982 and 4581000.

It is not an unprimeable number, because it can be changed into a prime (4581011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9555 + ... + 10022.

Almost surely, 2^4581018 is an apocalyptic number.

4581018 is an abundant number, since it is smaller than the sum of its proper divisors (6108570).

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

4581018 is a wasteful number, since it uses less digits than its factorization.

4581018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19598 (or 19595 counting only the distinct ones).

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

The square root of 4581018 is about 2140.3312827691. The cubic root of 4581018 is about 166.0812734068.

The spelling of 4581018 in words is "four million, five hundred eighty-one thousand, eighteen".