2345678289 has 12 divisors (see below), whose sum is σ = 3419868816. Its totient is φ = 1549170072.

The previous prime is 2345678287. The next prime is 2345678297. The reversal of 2345678289 is 9828765432.

It is not a de Polignac number, because 2345678289 - 2¹ = 2345678287 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2345678287) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1216939 + ... + 1218864.

It is an arithmetic number, because the mean of its divisors is an integer number (284989068).

Almost surely, 2^2345678289 is an apocalyptic number.

It is an amenable number.

2345678289 is a deficient number, since it is larger than the sum of its proper divisors (1074190527).

2345678289 is a wasteful number, since it uses less digits than its factorization.

2345678289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2435916 (or 2435913 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The square root of 2345678289 is about 48432.2030161751. The cubic root of 2345678289 is about 1328.6873983452.

The spelling of 2345678289 in words is "two billion, three hundred forty-five million, six hundred seventy-eight thousand, two hundred eighty-nine".