2943656863 has 16 divisors (see below), whose sum is σ = 3623694336. Its totient is φ = 2335576320.

The previous prime is 2943656857. The next prime is 2943656873. The reversal of 2943656863 is 3686563492.

It is not a de Polignac number, because 2943656863 - 2⁵ = 2943656831 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 2943656863.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2943656843) 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, 289906 + ... + 299887.

It is an arithmetic number, because the mean of its divisors is an integer number (226480896).

Almost surely, 2^2943656863 is an apocalyptic number.

2943656863 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

2943656863 is a deficient number, since it is larger than the sum of its proper divisors (680037473).

2943656863 is a wasteful number, since it uses less digits than its factorization.

2943656863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 589854.

The product of its digits is 5598720, while the sum is 52.

The square root of 2943656863 is about 54255.4777234520. The cubic root of 2943656863 is about 1433.1634634396.

The spelling of 2943656863 in words is "two billion, nine hundred forty-three million, six hundred fifty-six thousand, eight hundred sixty-three".