918330229 has 2 divisors, whose sum is σ = 918330230. Its totient is φ = 918330228.

The previous prime is 918330187. The next prime is 918330233. The reversal of 918330229 is 922033819.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 918211204 + 119025 = 30302^2 + 345^2 .

It is a cyclic number.

It is not a de Polignac number, because 918330229 - 2¹³ = 918322037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (918330239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 459165114 + 459165115.

It is an arithmetic number, because the mean of its divisors is an integer number (459165115).

Almost surely, 2^918330229 is an apocalyptic number.

It is an amenable number.

918330229 is a deficient number, since it is larger than the sum of its proper divisors (1).

918330229 is an equidigital number, since it uses as much as digits as its factorization.

918330229 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 918330229 is about 30303.9639156332. The cubic root of 918330229 is about 972.0000638594. Note that the first 4 decimals are identical.

The spelling of 918330229 in words is "nine hundred eighteen million, three hundred thirty thousand, two hundred twenty-nine".