3664047649 has 2 divisors, whose sum is σ = 3664047650. Its totient is φ = 3664047648.

The previous prime is 3664047623. The next prime is 3664047691. The reversal of 3664047649 is 9467404663.

3664047649 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., 3480174049 + 183873600 = 58993^2 + 13560^2 .

It is a cyclic number.

It is not a de Polignac number, because 3664047649 - 2¹¹ = 3664045601 is a prime.

It is not a weakly prime, because it can be changed into another prime (3664047749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1832023824 + 1832023825.

It is an arithmetic number, because the mean of its divisors is an integer number (1832023825).

Almost surely, 2^3664047649 is an apocalyptic number.

It is an amenable number.

3664047649 is a deficient number, since it is larger than the sum of its proper divisors (1).

3664047649 is an equidigital number, since it uses as much as digits as its factorization.

3664047649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 49.

The square root of 3664047649 is about 60531.3773922253. The cubic root of 3664047649 is about 1541.6544384609.

The spelling of 3664047649 in words is "three billion, six hundred sixty-four million, forty-seven thousand, six hundred forty-nine".