2184720289 has 2 divisors, whose sum is σ = 2184720290. Its totient is φ = 2184720288.

The previous prime is 2184720287. The next prime is 2184720299. The reversal of 2184720289 is 9820274812.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2070978064 + 113742225 = 45508^2 + 10665^2 .

It is a cyclic number.

It is not a de Polignac number, because 2184720289 - 2¹ = 2184720287 is a prime.

Together with 2184720287, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2184720283) by changing a digit.

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 as a sum of consecutive naturals, namely, 1092360144 + 1092360145.

It is an arithmetic number, because the mean of its divisors is an integer number (1092360145).

Almost surely, 2^2184720289 is an apocalyptic number.

It is an amenable number.

2184720289 is a deficient number, since it is larger than the sum of its proper divisors (1).

2184720289 is an equidigital number, since it uses as much as digits as its factorization.

2184720289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 129024, while the sum is 43.

The square root of 2184720289 is about 46740.9915277800. The cubic root of 2184720289 is about 1297.5734397097.

The spelling of 2184720289 in words is "two billion, one hundred eighty-four million, seven hundred twenty thousand, two hundred eighty-nine".