745246813 has 2 divisors, whose sum is σ = 745246814. Its totient is φ = 745246812.

The previous prime is 745246811. The next prime is 745246849. The reversal of 745246813 is 318642547.

745246813 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 738371929 + 6874884 = 27173^2 + 2622^2 .

It is an emirp because it is prime and its reverse (318642547) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 745246813 - 2¹ = 745246811 is a prime.

Together with 745246811, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (745246811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372623406 + 372623407.

It is an arithmetic number, because the mean of its divisors is an integer number (372623407).

Almost surely, 2^745246813 is an apocalyptic number.

It is an amenable number.

745246813 is a deficient number, since it is larger than the sum of its proper divisors (1).

745246813 is an equidigital number, since it uses as much as digits as its factorization.

745246813 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 40.

The square root of 745246813 is about 27299.2090178452. The cubic root of 745246813 is about 906.6368687192.

The spelling of 745246813 in words is "seven hundred forty-five million, two hundred forty-six thousand, eight hundred thirteen".