749405513 has 2 divisors, whose sum is σ = 749405514. Its totient is φ = 749405512.

The previous prime is 749405507. The next prime is 749405521. The reversal of 749405513 is 315504947.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 720815104 + 28590409 = 26848^2 + 5347^2 .

It is an emirp because it is prime and its reverse (315504947) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 749405513 - 2²⁴ = 732628297 is a prime.

It is not a weakly prime, because it can be changed into another prime (749405593) 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, 374702756 + 374702757.

It is an arithmetic number, because the mean of its divisors is an integer number (374702757).

Almost surely, 2^749405513 is an apocalyptic number.

It is an amenable number.

749405513 is a deficient number, since it is larger than the sum of its proper divisors (1).

749405513 is an equidigital number, since it uses as much as digits as its factorization.

749405513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 749405513 is about 27375.2719255901. The cubic root of 749405513 is about 908.3201763901.

The spelling of 749405513 in words is "seven hundred forty-nine million, four hundred five thousand, five hundred thirteen".