2289343778 has 18 divisors (see below), whose sum is σ = 3592254267. Its totient is φ = 1094159220.

The previous prime is 2289343759. The next prime is 2289343787. The reversal of 2289343778 is 8773439822.

It can be written as a sum of positive squares in only one way, i.e., 1144671889 + 1144671889 = 33833^2 + 33833^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=33833.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1555583 + ... + 1557053.

Almost surely, 2^2289343778 is an apocalyptic number.

2289343778 is a deficient number, since it is larger than the sum of its proper divisors (1302910489).

2289343778 is an frugal number, since it uses more digits than its factorization.

2289343778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2990 (or 1496 counting only the distinct ones).

The product of its digits is 4064256, while the sum is 53.

The square root of 2289343778 is about 47847.0874557689. The cubic root of 2289343778 is about 1317.9643742534.

The spelling of 2289343778 in words is "two billion, two hundred eighty-nine million, three hundred forty-three thousand, seven hundred seventy-eight".