2281788857 has 2 divisors, whose sum is σ = 2281788858. Its totient is φ = 2281788856.

The previous prime is 2281788811. The next prime is 2281788889. The reversal of 2281788857 is 7588871822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1799371561 + 482417296 = 42419^2 + 21964^2 .

It is a cyclic number.

It is not a de Polignac number, because 2281788857 - 2⁸ = 2281788601 is a prime.

It is not a weakly prime, because it can be changed into another prime (2281188857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1140894428 + 1140894429.

It is an arithmetic number, because the mean of its divisors is an integer number (1140894429).

Almost surely, 2^2281788857 is an apocalyptic number.

It is an amenable number.

2281788857 is a deficient number, since it is larger than the sum of its proper divisors (1).

2281788857 is an equidigital number, since it uses as much as digits as its factorization.

2281788857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4014080, while the sum is 56.

The square root of 2281788857 is about 47768.0736161717. The cubic root of 2281788857 is about 1316.5129991326.

The spelling of 2281788857 in words is "two billion, two hundred eighty-one million, seven hundred eighty-eight thousand, eight hundred fifty-seven".