2680838249 has 4 divisors (see below), whose sum is σ = 2683366020. Its totient is φ = 2678310480.

The previous prime is 2680838201. The next prime is 2680838257. The reversal of 2680838249 is 9428380862.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1597441024 + 1083397225 = 39968^2 + 32915^2 .

It is a cyclic number.

It is not a de Polignac number, because 2680838249 - 2²⁴ = 2664061033 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2680838197 and 2680838206.

It is not an unprimeable number, because it can be changed into a prime (2680838549) 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, 1262294 + ... + 1264415.

It is an arithmetic number, because the mean of its divisors is an integer number (670841505).

Almost surely, 2^2680838249 is an apocalyptic number.

It is an amenable number.

2680838249 is a deficient number, since it is larger than the sum of its proper divisors (2527771).

2680838249 is a wasteful number, since it uses less digits than its factorization.

2680838249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2527770.

The product of its (nonzero) digits is 1327104, while the sum is 50.

The square root of 2680838249 is about 51776.8118852445. The cubic root of 2680838249 is about 1389.1747165269.

The spelling of 2680838249 in words is "two billion, six hundred eighty million, eight hundred thirty-eight thousand, two hundred forty-nine".