3645413321 has 8 divisors (see below), whose sum is σ = 4186120800. Its totient is φ = 3139590240.

The previous prime is 3645413273. The next prime is 3645413323. The reversal of 3645413321 is 1233145463.

3645413321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3645413321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3645413323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8720876 + ... + 8721293.

It is an arithmetic number, because the mean of its divisors is an integer number (523265100).

Almost surely, 2^3645413321 is an apocalyptic number.

It is an amenable number.

3645413321 is a deficient number, since it is larger than the sum of its proper divisors (540707479).

3645413321 is a wasteful number, since it uses less digits than its factorization.

3645413321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17442199.

The product of its digits is 25920, while the sum is 32.

The square root of 3645413321 is about 60377.2583097312. The cubic root of 3645413321 is about 1539.0365200959.

Adding to 3645413321 its reverse (1233145463), we get a palindrome (4878558784).

The spelling of 3645413321 in words is "three billion, six hundred forty-five million, four hundred thirteen thousand, three hundred twenty-one".