3645338449 has 2 divisors, whose sum is σ = 3645338450. Its totient is φ = 3645338448.

The previous prime is 3645338393. The next prime is 3645338513. The reversal of 3645338449 is 9448335463.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3620188224 + 25150225 = 60168^2 + 5015^2 .

It is a cyclic number.

It is not a de Polignac number, because 3645338449 - 2⁷ = 3645338321 is a prime.

It is not a weakly prime, because it can be changed into another prime (3645333449) 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, 1822669224 + 1822669225.

It is an arithmetic number, because the mean of its divisors is an integer number (1822669225).

Almost surely, 2^3645338449 is an apocalyptic number.

It is an amenable number.

3645338449 is a deficient number, since it is larger than the sum of its proper divisors (1).

3645338449 is an equidigital number, since it uses as much as digits as its factorization.

3645338449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3732480, while the sum is 49.

The square root of 3645338449 is about 60376.6382717687. The cubic root of 3645338449 is about 1539.0259834278.

The spelling of 3645338449 in words is "three billion, six hundred forty-five million, three hundred thirty-eight thousand, four hundred forty-nine".