3645618656 has 48 divisors (see below), whose sum is σ = 7273584864. Its totient is φ = 1798508544.

The previous prime is 3645618653. The next prime is 3645618659. The reversal of 3645618656 is 6568165463.

It is an interprime number because it is at equal distance from previous prime (3645618653) and next prime (3645618659).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3645618653) 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 in 7 ways as a sum of consecutive naturals, for example, 840365 + ... + 844691.

It is an arithmetic number, because the mean of its divisors is an integer number (151533018).

Almost surely, 2^3645618656 is an apocalyptic number.

It is an amenable number.

3645618656 is a deficient number, since it is larger than the sum of its proper divisors (3627966208).

3645618656 is a wasteful number, since it uses less digits than its factorization.

3645618656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4683 (or 4675 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 50.

The square root of 3645618656 is about 60378.9587190770. The cubic root of 3645618656 is about 1539.0654159625.

The spelling of 3645618656 in words is "three billion, six hundred forty-five million, six hundred eighteen thousand, six hundred fifty-six".