745411609 has 2 divisors, whose sum is σ = 745411610. Its totient is φ = 745411608.

The previous prime is 745411571. The next prime is 745411627. The reversal of 745411609 is 906114547.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 447745600 + 297666009 = 21160^2 + 17253^2 .

It is a cyclic number.

It is not a de Polignac number, because 745411609 - 2⁷ = 745411481 is a prime.

It is not a weakly prime, because it can be changed into another prime (745412609) 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, 372705804 + 372705805.

It is an arithmetic number, because the mean of its divisors is an integer number (372705805).

Almost surely, 2^745411609 is an apocalyptic number.

It is an amenable number.

745411609 is a deficient number, since it is larger than the sum of its proper divisors (1).

745411609 is an equidigital number, since it uses as much as digits as its factorization.

745411609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 37.

The square root of 745411609 is about 27302.2271802137. The cubic root of 745411609 is about 906.7036918241.

The spelling of 745411609 in words is "seven hundred forty-five million, four hundred eleven thousand, six hundred nine".