2289981745 has 16 divisors (see below), whose sum is σ = 2912040000. Its totient is φ = 1723906368.

The previous prime is 2289981731. The next prime is 2289981751. The reversal of 2289981745 is 5471899822.

It is a cyclic number.

It is not a de Polignac number, because 2289981745 - 2⁹ = 2289981233 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66735 + ... + 95044.

It is an arithmetic number, because the mean of its divisors is an integer number (182002500).

Almost surely, 2^2289981745 is an apocalyptic number.

It is an amenable number.

2289981745 is a deficient number, since it is larger than the sum of its proper divisors (622058255).

2289981745 is a wasteful number, since it uses less digits than its factorization.

2289981745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161952.

The product of its digits is 2903040, while the sum is 55.

The square root of 2289981745 is about 47853.7537190135. The cubic root of 2289981745 is about 1318.0867877437.

The spelling of 2289981745 in words is "two billion, two hundred eighty-nine million, nine hundred eighty-one thousand, seven hundred forty-five".