2643680289 has 8 divisors (see below), whose sum is σ = 3525346720. Its totient is φ = 1762233696.

The previous prime is 2643680233. The next prime is 2643680293. The reversal of 2643680289 is 9820863462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2643680289 - 2¹¹ = 2643678241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2643680219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24484 + ... + 76725.

It is an arithmetic number, because the mean of its divisors is an integer number (440668340).

Almost surely, 2^2643680289 is an apocalyptic number.

It is an amenable number.

2643680289 is a deficient number, since it is larger than the sum of its proper divisors (881666431).

2643680289 is a wasteful number, since it uses less digits than its factorization.

2643680289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109919.

The product of its (nonzero) digits is 995328, while the sum is 48.

The square root of 2643680289 is about 51416.7316055776. The cubic root of 2643680289 is about 1382.7265789760.

The spelling of 2643680289 in words is "two billion, six hundred forty-three million, six hundred eighty thousand, two hundred eighty-nine".