4518149 has 4 divisors (see below), whose sum is σ = 4530636. Its totient is φ = 4505664.

The previous prime is 4518133. The next prime is 4518169. The reversal of 4518149 is 9418154.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1909924 + 2608225 = 1382^2 + 1615^2 .

It is a cyclic number.

It is not a de Polignac number, because 4518149 - 2⁴ = 4518133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4518109) 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, 5684 + ... + 6429.

It is an arithmetic number, because the mean of its divisors is an integer number (1132659).

Almost surely, 2^4518149 is an apocalyptic number.

It is an amenable number.

4518149 is a deficient number, since it is larger than the sum of its proper divisors (12487).

4518149 is a wasteful number, since it uses less digits than its factorization.

4518149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12486.

The product of its digits is 5760, while the sum is 32.

The square root of 4518149 is about 2125.5937993888. The cubic root of 4518149 is about 165.3180153855.

The spelling of 4518149 in words is "four million, five hundred eighteen thousand, one hundred forty-nine".