2943638673 has 4 divisors (see below), whose sum is σ = 3924851568. Its totient is φ = 1962425780.

The previous prime is 2943638653. The next prime is 2943638681. The reversal of 2943638673 is 3768363492.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2943638673 - 2⁹ = 2943638161 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2943638653) 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 3 ways as a sum of consecutive naturals, for example, 490606443 + ... + 490606448.

It is an arithmetic number, because the mean of its divisors is an integer number (981212892).

Almost surely, 2^2943638673 is an apocalyptic number.

It is an amenable number.

2943638673 is a deficient number, since it is larger than the sum of its proper divisors (981212895).

2943638673 is an equidigital number, since it uses as much as digits as its factorization.

2943638673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981212894.

The product of its digits is 3919104, while the sum is 51.

The square root of 2943638673 is about 54255.3100903497. The cubic root of 2943638673 is about 1433.1605114088.

The spelling of 2943638673 in words is "two billion, nine hundred forty-three million, six hundred thirty-eight thousand, six hundred seventy-three".