4518139 has 8 divisors (see below), whose sum is σ = 4656960. Its totient is φ = 4380936.

The previous prime is 4518133. The next prime is 4518169. The reversal of 4518139 is 9318154.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4518139 - 2¹⁷ = 4387067 is a prime.

It is a Duffinian number.

4518139 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 4518139.

It is not an unprimeable number, because it can be changed into a prime (4518133) 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 7 ways as a sum of consecutive naturals, for example, 7404 + ... + 7990.

It is an arithmetic number, because the mean of its divisors is an integer number (582120).

Almost surely, 2^4518139 is an apocalyptic number.

4518139 is a deficient number, since it is larger than the sum of its proper divisors (138821).

4518139 is a wasteful number, since it uses less digits than its factorization.

4518139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809.

The product of its digits is 4320, while the sum is 31.

The square root of 4518139 is about 2125.5914471036. The cubic root of 4518139 is about 165.3178934196.

The spelling of 4518139 in words is "four million, five hundred eighteen thousand, one hundred thirty-nine".