4645340321 has 16 divisors (see below), whose sum is σ = 5097900240. Its totient is φ = 4213278720.

The previous prime is 4645340299. The next prime is 4645340347. The reversal of 4645340321 is 1230435464.

It can be written as a sum of positive squares in 8 ways, for example, as 637057600 + 4008282721 = 25240^2 + 63311^2 .

It is a cyclic number.

It is not a de Polignac number, because 4645340321 - 2¹⁰ = 4645339297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4645340351) 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, 258005 + ... + 275421.

It is an arithmetic number, because the mean of its divisors is an integer number (318618765).

Almost surely, 2^4645340321 is an apocalyptic number.

It is an amenable number.

4645340321 is a deficient number, since it is larger than the sum of its proper divisors (452559919).

4645340321 is a wasteful number, since it uses less digits than its factorization.

4645340321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18004.

The product of its (nonzero) digits is 34560, while the sum is 32.

The square root of 4645340321 is about 68156.7334971388. The cubic root of 4645340321 is about 1668.5498210674.

Adding to 4645340321 its reverse (1230435464), we get a palindrome (5875775785).

The spelling of 4645340321 in words is "four billion, six hundred forty-five million, three hundred forty thousand, three hundred twenty-one".