4518973 has 4 divisors (see below), whose sum is σ = 4527868. Its totient is φ = 4510080.

The previous prime is 4518967. The next prime is 4518989. The reversal of 4518973 is 3798154.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3798154 = 2 ⋅1899077.

It can be written as a sum of positive squares in 2 ways, for example, as 2393209 + 2125764 = 1547^2 + 1458^2 .

It is a cyclic number.

It is not a de Polignac number, because 4518973 - 2²¹ = 2421821 is a prime.

It is a super-2 number, since 2×4518973² = 40842233949458, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4518953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3636 + ... + 4717.

It is an arithmetic number, because the mean of its divisors is an integer number (1131967).

Almost surely, 2^4518973 is an apocalyptic number.

It is an amenable number.

4518973 is a deficient number, since it is larger than the sum of its proper divisors (8895).

4518973 is an equidigital number, since it uses as much as digits as its factorization.

4518973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8894.

The product of its digits is 30240, while the sum is 37.

The square root of 4518973 is about 2125.7876187428. The cubic root of 4518973 is about 165.3280647638.

The spelling of 4518973 in words is "four million, five hundred eighteen thousand, nine hundred seventy-three".