3243617649 has 16 divisors (see below), whose sum is σ = 4896028800. Its totient is φ = 2121610608.

The previous prime is 3243617639. The next prime is 3243617659. The reversal of 3243617649 is 9467163423.

3243617649 is a `hidden beast` number, since 3 + 2 + 436 + 176 + 49 = 666.

3243617649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3243617639) and next prime (3243617659).

It is not a de Polignac number, because 3243617649 - 2⁴ = 3243617633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3243617609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1131909 + ... + 1134770.

It is an arithmetic number, because the mean of its divisors is an integer number (306001800).

Almost surely, 2^3243617649 is an apocalyptic number.

It is an amenable number.

3243617649 is a deficient number, since it is larger than the sum of its proper divisors (1652411151).

3243617649 is a wasteful number, since it uses less digits than its factorization.

3243617649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2266741 (or 2266735 counting only the distinct ones).

The product of its digits is 653184, while the sum is 45.

The square root of 3243617649 is about 56952.7668247997. The cubic root of 3243617649 is about 1480.2777736785.

The spelling of 3243617649 in words is "three billion, two hundred forty-three million, six hundred seventeen thousand, six hundred forty-nine".