4644163313 has 4 divisors (see below), whose sum is σ = 4644299760. Its totient is φ = 4644026868.

The previous prime is 4644163273. The next prime is 4644163361. The reversal of 4644163313 is 3133614464.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 4644163313 - 2²⁰ = 4643114737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4644163613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29318 + ... + 100736.

It is an arithmetic number, because the mean of its divisors is an integer number (1161074940).

Almost surely, 2^4644163313 is an apocalyptic number.

It is an amenable number.

4644163313 is a deficient number, since it is larger than the sum of its proper divisors (136447).

4644163313 is an equidigital number, since it uses as much as digits as its factorization.

4644163313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136446.

The product of its digits is 62208, while the sum is 35.

The square root of 4644163313 is about 68148.0983813929. The cubic root of 4644163313 is about 1668.4088868379.

Adding to 4644163313 its reverse (3133614464), we get a palindrome (7777777777).

The spelling of 4644163313 in words is "four billion, six hundred forty-four million, one hundred sixty-three thousand, three hundred thirteen".