3643450321 has 9 divisors (see below), whose sum is σ = 4238790921. Its totient is φ = 3122595252.

The previous prime is 3643450301. The next prime is 3643450337. The reversal of 3643450321 is 1230543463.

The square root of 3643450321 is 60361.

It is a perfect power (a square), and thus also a powerful number.

3643450321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3643450321 - 2¹¹ = 3643448273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3643450301) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 418216 + ... + 426838.

It is an arithmetic number, because the mean of its divisors is an integer number (470976769).

Almost surely, 2^3643450321 is an apocalyptic number.

3643450321 is the 60361-st square number.

3643450321 is the 30181-st centered octagonal number.

It is an amenable number.

3643450321 is a deficient number, since it is larger than the sum of its proper divisors (595340600).

3643450321 is an frugal number, since it uses more digits than its factorization.

3643450321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17260 (or 8630 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 31.

The cubic root of 3643450321 is about 1538.7602211907.

Adding to 3643450321 its reverse (1230543463), we get a palindrome (4873993784).

The spelling of 3643450321 in words is "three billion, six hundred forty-three million, four hundred fifty thousand, three hundred twenty-one".