4518891 has 18 divisors (see below), whose sum is σ = 7070388. Its totient is φ = 2779920.

The previous prime is 4518887. The next prime is 4518893. The reversal of 4518891 is 1988154.

It is not a de Polignac number, because 4518891 - 2² = 4518887 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4518893) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 36 + ... + 3006.

Almost surely, 2^4518891 is an apocalyptic number.

4518891 is a deficient number, since it is larger than the sum of its proper divisors (2551497).

4518891 is a wasteful number, since it uses less digits than its factorization.

4518891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3003 (or 2987 counting only the distinct ones).

The product of its digits is 11520, while the sum is 36.

The square root of 4518891 is about 2125.7683316862. The cubic root of 4518891 is about 165.3270647590.

The spelling of 4518891 in words is "four million, five hundred eighteen thousand, eight hundred ninety-one".