2813649205 has 8 divisors (see below), whose sum is σ = 3387031992. Its totient is φ = 2243817408.

The previous prime is 2813649197. The next prime is 2813649239. The reversal of 2813649205 is 5029463182.

It can be written as a sum of positive squares in 4 ways, for example, as 97259044 + 2716390161 = 9862^2 + 52119^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 2813649205 - 2³ = 2813649197 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 7 ways as a sum of consecutive naturals, for example, 886002 + ... + 889171.

It is an arithmetic number, because the mean of its divisors is an integer number (423378999).

Almost surely, 2^2813649205 is an apocalyptic number.

It is an amenable number.

2813649205 is a deficient number, since it is larger than the sum of its proper divisors (573382787).

2813649205 is a wasteful number, since it uses less digits than its factorization.

2813649205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1775495.

The product of its (nonzero) digits is 103680, while the sum is 40.

The square root of 2813649205 is about 53043.8422910709. The cubic root of 2813649205 is about 1411.7462737301.

The spelling of 2813649205 in words is "two billion, eight hundred thirteen million, six hundred forty-nine thousand, two hundred five".