4001946863 has 12 divisors (see below), whose sum is σ = 4257856680. Its totient is φ = 3760643712.

The previous prime is 4001946857. The next prime is 4001946869. The reversal of 4001946863 is 3686491004.

It is an interprime number because it is at equal distance from previous prime (4001946857) and next prime (4001946869).

It is not a de Polignac number, because 4001946863 - 2¹⁰ = 4001945839 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4001946863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4001946869) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 179945 + ... + 200957.

It is an arithmetic number, because the mean of its divisors is an integer number (354821390).

Almost surely, 2^4001946863 is an apocalyptic number.

4001946863 is a deficient number, since it is larger than the sum of its proper divisors (255909817).

4001946863 is a wasteful number, since it uses less digits than its factorization.

4001946863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21706 (or 21689 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 4001946863 is about 63260.9426344565. The cubic root of 4001946863 is about 1587.6585478948.

The spelling of 4001946863 in words is "four billion, one million, nine hundred forty-six thousand, eight hundred sixty-three".