2808280049 has 4 divisors (see below), whose sum is σ = 2898869760. Its totient is φ = 2717690340.

The previous prime is 2808280043. The next prime is 2808280063. The reversal of 2808280049 is 9400828082.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9400828082 = 2 ⋅4700414041.

It is a cyclic number.

It is not a de Polignac number, because 2808280049 - 2²⁰ = 2807231473 is a prime.

It is a super-2 number, since 2×2808280049² = 15772873667222884802, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2808279988 and 2808280015.

It is not an unprimeable number, because it can be changed into a prime (2808280043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45294809 + ... + 45294870.

It is an arithmetic number, because the mean of its divisors is an integer number (724717440).

Almost surely, 2^2808280049 is an apocalyptic number.

It is an amenable number.

2808280049 is a deficient number, since it is larger than the sum of its proper divisors (90589711).

2808280049 is an equidigital number, since it uses as much as digits as its factorization.

2808280049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90589710.

The product of its (nonzero) digits is 73728, while the sum is 41.

The square root of 2808280049 is about 52993.2075741788. The cubic root of 2808280049 is about 1410.8477119942.

The spelling of 2808280049 in words is "two billion, eight hundred eight million, two hundred eighty thousand, forty-nine".