2289771487 has 2 divisors, whose sum is σ = 2289771488. Its totient is φ = 2289771486.

The previous prime is 2289771481. The next prime is 2289771499. The reversal of 2289771487 is 7841779822.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2289771487 - 2³ = 2289771479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2289771481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1144885743 + 1144885744.

It is an arithmetic number, because the mean of its divisors is an integer number (1144885744).

Almost surely, 2^2289771487 is an apocalyptic number.

2289771487 is a deficient number, since it is larger than the sum of its proper divisors (1).

2289771487 is an equidigital number, since it uses as much as digits as its factorization.

2289771487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3161088, while the sum is 55.

The square root of 2289771487 is about 47851.5567876323. The cubic root of 2289771487 is about 1318.0464458247.

The spelling of 2289771487 in words is "two billion, two hundred eighty-nine million, seven hundred seventy-one thousand, four hundred eighty-seven".