2884872649 has 4 divisors (see below), whose sum is σ = 2885542164. Its totient is φ = 2884203136.

The previous prime is 2884872637. The next prime is 2884872659. The reversal of 2884872649 is 9462784882.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9462784882 = 2 ⋅4731392441.

It can be written as a sum of positive squares in 2 ways, for example, as 727920400 + 2156952249 = 26980^2 + 46443^2 .

It is a cyclic number.

It is not a de Polignac number, because 2884872649 - 2¹¹ = 2884870601 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2884872593 and 2884872602.

It is not an unprimeable number, because it can be changed into a prime (2884872629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 328252 + ... + 336925.

It is an arithmetic number, because the mean of its divisors is an integer number (721385541).

Almost surely, 2^2884872649 is an apocalyptic number.

It is an amenable number.

2884872649 is a deficient number, since it is larger than the sum of its proper divisors (669515).

2884872649 is an equidigital number, since it uses as much as digits as its factorization.

2884872649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669514.

The product of its digits is 12386304, while the sum is 58.

The square root of 2884872649 is about 53711.0105006413. The cubic root of 2884872649 is about 1423.5592536221.

The spelling of 2884872649 in words is "two billion, eight hundred eighty-four million, eight hundred seventy-two thousand, six hundred forty-nine".