4518749 has 2 divisors, whose sum is σ = 4518750. Its totient is φ = 4518748.

The previous prime is 4518743. The next prime is 4518779. The reversal of 4518749 is 9478154.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3829849 + 688900 = 1957^2 + 830^2 .

It is a cyclic number.

It is not a de Polignac number, because 4518749 - 2¹⁶ = 4453213 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4518743) 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 as a sum of consecutive naturals, namely, 2259374 + 2259375.

It is an arithmetic number, because the mean of its divisors is an integer number (2259375).

Almost surely, 2^4518749 is an apocalyptic number.

It is an amenable number.

4518749 is a deficient number, since it is larger than the sum of its proper divisors (1).

4518749 is an equidigital number, since it uses as much as digits as its factorization.

4518749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 38.

The square root of 4518749 is about 2125.7349317354. The cubic root of 4518749 is about 165.3253330149.

The spelling of 4518749 in words is "four million, five hundred eighteen thousand, seven hundred forty-nine".