4118605 has 4 divisors (see below), whose sum is σ = 4942332. Its totient is φ = 3294880.

The previous prime is 4118603. The next prime is 4118627. The reversal of 4118605 is 5068114.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5068114 = 2 ⋅2534057.

It can be written as a sum of positive squares in 2 ways, for example, as 1565001 + 2553604 = 1251^2 + 1598^2 .

It is not a de Polignac number, because 4118605 - 2¹ = 4118603 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4118605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4118603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 411856 + ... + 411865.

It is an arithmetic number, because the mean of its divisors is an integer number (1235583).

Almost surely, 2^4118605 is an apocalyptic number.

It is an amenable number.

4118605 is a deficient number, since it is larger than the sum of its proper divisors (823727).

4118605 is an equidigital number, since it uses as much as digits as its factorization.

4118605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 823726.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 4118605 is about 2029.4346503398. The cubic root of 4118605 is about 160.2937961313.

The spelling of 4118605 in words is "four million, one hundred eighteen thousand, six hundred five".