2194087289 has 2 divisors, whose sum is σ = 2194087290. Its totient is φ = 2194087288.

The previous prime is 2194087271. The next prime is 2194087297. The reversal of 2194087289 is 9827804912.

2194087289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1797081664 + 397005625 = 42392^2 + 19925^2 .

It is a cyclic number.

It is not a de Polignac number, because 2194087289 - 2⁸ = 2194087033 is a prime.

It is not a weakly prime, because it can be changed into another prime (2194087219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1097043644 + 1097043645.

It is an arithmetic number, because the mean of its divisors is an integer number (1097043645).

Almost surely, 2^2194087289 is an apocalyptic number.

It is an amenable number.

2194087289 is a deficient number, since it is larger than the sum of its proper divisors (1).

2194087289 is an equidigital number, since it uses as much as digits as its factorization.

2194087289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 580608, while the sum is 50.

The square root of 2194087289 is about 46841.0854805906. The cubic root of 2194087289 is about 1299.4252467177.

The spelling of 2194087289 in words is "two billion, one hundred ninety-four million, eighty-seven thousand, two hundred eighty-nine".