2289771481 has 2 divisors, whose sum is σ = 2289771482. Its totient is φ = 2289771480.

The previous prime is 2289771479. The next prime is 2289771487. The reversal of 2289771481 is 1841779822.

2289771481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2252451600 + 37319881 = 47460^2 + 6109^2 .

It is a cyclic number.

It is not a de Polignac number, because 2289771481 - 2¹ = 2289771479 is a prime.

It is a super-2 number, since 2×2289771481² = 10486106870401866722, which contains 22 as substring.

Together with 2289771479, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2289771487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1144885740 + 1144885741.

It is an arithmetic number, because the mean of its divisors is an integer number (1144885741).

Almost surely, 2^2289771481 is an apocalyptic number.

It is an amenable number.

2289771481 is a deficient number, since it is larger than the sum of its proper divisors (1).

2289771481 is an equidigital number, since it uses as much as digits as its factorization.

2289771481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 451584, while the sum is 49.

The square root of 2289771481 is about 47851.5567249384. The cubic root of 2289771481 is about 1318.0464446734.

The spelling of 2289771481 in words is "two billion, two hundred eighty-nine million, seven hundred seventy-one thousand, four hundred eighty-one".