2289787781819 has 2 divisors, whose sum is σ = 2289787781820. Its totient is φ = 2289787781818.

The previous prime is 2289787781797. The next prime is 2289787781843. The reversal of 2289787781819 is 9181877879822.

2289787781819 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 is a cyclic number.

It is not a de Polignac number, because 2289787781819 - 2¹² = 2289787777723 is a prime.

It is a super-2 number, since 2×2289787781819² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2289787781819.

It is not a weakly prime, because it can be changed into another prime (2289787781899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1144893890909 + 1144893890910.

It is an arithmetic number, because the mean of its divisors is an integer number (1144893890910).

Almost surely, 2^{2289787781819} is an apocalyptic number.

2289787781819 is a deficient number, since it is larger than the sum of its proper divisors (1).

2289787781819 is an equidigital number, since it uses as much as digits as its factorization.

2289787781819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 455196672, while the sum is 77.

The spelling of 2289787781819 in words is "two trillion, two hundred eighty-nine billion, seven hundred eighty-seven million, seven hundred eighty-one thousand, eight hundred nineteen".