2806845749 has 2 divisors, whose sum is σ = 2806845750. Its totient is φ = 2806845748.

The previous prime is 2806845739. The next prime is 2806845791. The reversal of 2806845749 is 9475486082.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2409042724 + 397803025 = 49082^2 + 19945^2 .

It is a cyclic number.

It is not a de Polignac number, because 2806845749 - 2²⁰ = 2805797173 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2806845749.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2806845719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1403422874 + 1403422875.

It is an arithmetic number, because the mean of its divisors is an integer number (1403422875).

Almost surely, 2^2806845749 is an apocalyptic number.

It is an amenable number.

2806845749 is a deficient number, since it is larger than the sum of its proper divisors (1).

2806845749 is an equidigital number, since it uses as much as digits as its factorization.

2806845749 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3870720, while the sum is 53.

The square root of 2806845749 is about 52979.6729793607. The cubic root of 2806845749 is about 1410.6074791300.

The spelling of 2806845749 in words is "two billion, eight hundred six million, eight hundred forty-five thousand, seven hundred forty-nine".