2943684641 has 2 divisors, whose sum is σ = 2943684642. Its totient is φ = 2943684640.

The previous prime is 2943684587. The next prime is 2943684659. The reversal of 2943684641 is 1464863492.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2550654016 + 393030625 = 50504^2 + 19825^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2943684641 is a prime.

It is not a weakly prime, because it can be changed into another prime (2943684661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1471842320 + 1471842321.

It is an arithmetic number, because the mean of its divisors is an integer number (1471842321).

Almost surely, 2^2943684641 is an apocalyptic number.

It is an amenable number.

2943684641 is a deficient number, since it is larger than the sum of its proper divisors (1).

2943684641 is an equidigital number, since it uses as much as digits as its factorization.

2943684641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 995328, while the sum is 47.

The square root of 2943684641 is about 54255.7337154332. The cubic root of 2943684641 is about 1433.1679714706.

The spelling of 2943684641 in words is "two billion, nine hundred forty-three million, six hundred eighty-four thousand, six hundred forty-one".