2789849885 has 4 divisors (see below), whose sum is σ = 3347819868. Its totient is φ = 2231879904.

The previous prime is 2789849873. The next prime is 2789849893. The reversal of 2789849885 is 5889489872.

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 1767193444 + 1022656441 = 42038^2 + 31979^2 .

It is a cyclic number.

It is not a de Polignac number, because 2789849885 - 2¹⁰ = 2789848861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 278984984 + ... + 278984993.

It is an arithmetic number, because the mean of its divisors is an integer number (836954967).

Almost surely, 2^2789849885 is an apocalyptic number.

It is an amenable number.

2789849885 is a deficient number, since it is larger than the sum of its proper divisors (557969983).

2789849885 is an equidigital number, since it uses as much as digits as its factorization.

2789849885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557969982.

The product of its digits is 92897280, while the sum is 68.

The square root of 2789849885 is about 52819.0295726834. The cubic root of 2789849885 is about 1407.7545678129.

The spelling of 2789849885 in words is "two billion, seven hundred eighty-nine million, eight hundred forty-nine thousand, eight hundred eighty-five".