4641645563 has 4 divisors (see below), whose sum is σ = 4648267728. Its totient is φ = 4635023400.

The previous prime is 4641645559. The next prime is 4641645583. The reversal of 4641645563 is 3655461464.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4641645563 - 2² = 4641645559 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4641645583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3310031 + ... + 3311432.

It is an arithmetic number, because the mean of its divisors is an integer number (1162066932).

Almost surely, 2^4641645563 is an apocalyptic number.

4641645563 is a deficient number, since it is larger than the sum of its proper divisors (6622165).

4641645563 is an equidigital number, since it uses as much as digits as its factorization.

4641645563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6622164.

The product of its digits is 1036800, while the sum is 44.

The square root of 4641645563 is about 68129.6232412891. The cubic root of 4641645563 is about 1668.1073330006.

The spelling of 4641645563 in words is "four billion, six hundred forty-one million, six hundred forty-five thousand, five hundred sixty-three".