2768056309 has 4 divisors (see below), whose sum is σ = 2857348480. Its totient is φ = 2678764140.

The previous prime is 2768056307. The next prime is 2768056337. The reversal of 2768056309 is 9036508672.

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 2768056309 - 2¹ = 2768056307 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2768056301) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44646039 + ... + 44646100.

It is an arithmetic number, because the mean of its divisors is an integer number (714337120).

Almost surely, 2^2768056309 is an apocalyptic number.

It is an amenable number.

2768056309 is a deficient number, since it is larger than the sum of its proper divisors (89292171).

2768056309 is an equidigital number, since it uses as much as digits as its factorization.

2768056309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89292170.

The product of its (nonzero) digits is 544320, while the sum is 46.

The square root of 2768056309 is about 52612.3208858914. The cubic root of 2768056309 is about 1404.0793111976.

The spelling of 2768056309 in words is "two billion, seven hundred sixty-eight million, fifty-six thousand, three hundred nine".