4919521863 has 24 divisors (see below), whose sum is σ = 6973934800. Its totient is φ = 3084088320.

The previous prime is 4919521847. The next prime is 4919521883. The reversal of 4919521863 is 3681259194.

It is not a de Polignac number, because 4919521863 - 2⁴ = 4919521847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4919521883) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1611963 + ... + 1615011.

Almost surely, 2^4919521863 is an apocalyptic number.

4919521863 is a deficient number, since it is larger than the sum of its proper divisors (2054412937).

4919521863 is a wasteful number, since it uses less digits than its factorization.

4919521863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4947 (or 4930 counting only the distinct ones).

The product of its digits is 466560, while the sum is 48.

The square root of 4919521863 is about 70139.3032685669. The cubic root of 4919521863 is about 1700.7519007227.

The spelling of 4919521863 in words is "four billion, nine hundred nineteen million, five hundred twenty-one thousand, eight hundred sixty-three".