918049289 has 2 divisors, whose sum is σ = 918049290. Its totient is φ = 918049288.

The previous prime is 918049271. The next prime is 918049303. The reversal of 918049289 is 982940819.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 529368064 + 388681225 = 23008^2 + 19715^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-918049289 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (918049229) 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, 459024644 + 459024645.

It is an arithmetic number, because the mean of its divisors is an integer number (459024645).

Almost surely, 2^918049289 is an apocalyptic number.

It is an amenable number.

918049289 is a deficient number, since it is larger than the sum of its proper divisors (1).

918049289 is an equidigital number, since it uses as much as digits as its factorization.

918049289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 50.

The square root of 918049289 is about 30299.3281938725. The cubic root of 918049289 is about 971.9009341053.

The spelling of 918049289 in words is "nine hundred eighteen million, forty-nine thousand, two hundred eighty-nine".