744845813 has 2 divisors, whose sum is σ = 744845814. Its totient is φ = 744845812.

The previous prime is 744845797. The next prime is 744845819. The reversal of 744845813 is 318548447.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 580954609 + 163891204 = 24103^2 + 12802^2 .

It is a cyclic number.

It is not a de Polignac number, because 744845813 - 2⁴ = 744845797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (744845819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372422906 + 372422907.

It is an arithmetic number, because the mean of its divisors is an integer number (372422907).

Almost surely, 2^744845813 is an apocalyptic number.

It is an amenable number.

744845813 is a deficient number, since it is larger than the sum of its proper divisors (1).

744845813 is an equidigital number, since it uses as much as digits as its factorization.

744845813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 430080, while the sum is 44.

The square root of 744845813 is about 27291.8634944556. The cubic root of 744845813 is about 906.4742261309.

The spelling of 744845813 in words is "seven hundred forty-four million, eight hundred forty-five thousand, eight hundred thirteen".