745038709 has 2 divisors, whose sum is σ = 745038710. Its totient is φ = 745038708.

The previous prime is 745038673. The next prime is 745038733. The reversal of 745038709 is 907830547.

It is a happy number.

745038709 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 691427025 + 53611684 = 26295^2 + 7322^2 .

It is a cyclic number.

It is not a de Polignac number, because 745038709 - 2⁹ = 745038197 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (745038799) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372519354 + 372519355.

It is an arithmetic number, because the mean of its divisors is an integer number (372519355).

Almost surely, 2^745038709 is an apocalyptic number.

It is an amenable number.

745038709 is a deficient number, since it is larger than the sum of its proper divisors (1).

745038709 is an equidigital number, since it uses as much as digits as its factorization.

745038709 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 211680, while the sum is 43.

The square root of 745038709 is about 27295.3972127170. The cubic root of 745038709 is about 906.5524705841.

The spelling of 745038709 in words is "seven hundred forty-five million, thirty-eight thousand, seven hundred nine".