2806845457 has 16 divisors (see below), whose sum is σ = 3172901760. Its totient is φ = 2478240336.

The previous prime is 2806845439. The next prime is 2806845463. The reversal of 2806845457 is 7545486082.

It is not a de Polignac number, because 2806845457 - 2¹¹ = 2806843409 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2806845457.

It is not an unprimeable number, because it can be changed into a prime (2806845257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22758 + ... + 78304.

It is an arithmetic number, because the mean of its divisors is an integer number (198306360).

Almost surely, 2^2806845457 is an apocalyptic number.

It is an amenable number.

2806845457 is a deficient number, since it is larger than the sum of its proper divisors (366056303).

2806845457 is an equidigital number, since it uses as much as digits as its factorization.

2806845457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55609 (or 55583 counting only the distinct ones).

The product of its (nonzero) digits is 2150400, while the sum is 49.

The square root of 2806845457 is about 52979.6702235867. The cubic root of 2806845457 is about 1410.6074302142.

The spelling of 2806845457 in words is "two billion, eight hundred six million, eight hundred forty-five thousand, four hundred fifty-seven".