2798563009 has 4 divisors (see below), whose sum is σ = 3052977840. Its totient is φ = 2544148180.

The previous prime is 2798563007. The next prime is 2798563013. The reversal of 2798563009 is 9003658972.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2798563009 - 2¹ = 2798563007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2798563007) 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, 127207399 + ... + 127207420.

It is an arithmetic number, because the mean of its divisors is an integer number (763244460).

Almost surely, 2^2798563009 is an apocalyptic number.

It is an amenable number.

2798563009 is a deficient number, since it is larger than the sum of its proper divisors (254414831).

2798563009 is a wasteful number, since it uses less digits than its factorization.

2798563009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254414830.

The product of its (nonzero) digits is 816480, while the sum is 49.

The square root of 2798563009 is about 52901.4461900618. The cubic root of 2798563009 is about 1409.2185883711.

The spelling of 2798563009 in words is "two billion, seven hundred ninety-eight million, five hundred sixty-three thousand, nine".