2281781833 has 2 divisors, whose sum is σ = 2281781834. Its totient is φ = 2281781832.

The previous prime is 2281781819. The next prime is 2281781851. The reversal of 2281781833 is 3381871822.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2281781824 + 9 = 47768^2 + 3^2 .

It is a cyclic number.

It is not a de Polignac number, because 2281781833 - 2⁹ = 2281781321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2281781833.

It is not a weakly prime, because it can be changed into another prime (2281781813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1140890916 + 1140890917.

It is an arithmetic number, because the mean of its divisors is an integer number (1140890917).

Almost surely, 2^2281781833 is an apocalyptic number.

It is an amenable number.

2281781833 is a deficient number, since it is larger than the sum of its proper divisors (1).

2281781833 is an equidigital number, since it uses as much as digits as its factorization.

2281781833 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129024, while the sum is 43.

The square root of 2281781833 is about 47768.0000942053. Note that the first 4 decimals coincide. The cubic root of 2281781833 is about 1316.5116482631.

The spelling of 2281781833 in words is "two billion, two hundred eighty-one million, seven hundred eighty-one thousand, eight hundred thirty-three".