218028241 has 2 divisors, whose sum is σ = 218028242. Its totient is φ = 218028240.

The previous prime is 218028203. The next prime is 218028257. The reversal of 218028241 is 142820812.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 192626641 + 25401600 = 13879^2 + 5040^2 .

It is a cyclic number.

It is not a de Polignac number, because 218028241 - 2⁷ = 218028113 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (218028341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109014120 + 109014121.

It is an arithmetic number, because the mean of its divisors is an integer number (109014121).

Almost surely, 2^218028241 is an apocalyptic number.

It is an amenable number.

218028241 is a deficient number, since it is larger than the sum of its proper divisors (1).

218028241 is an equidigital number, since it uses as much as digits as its factorization.

218028241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2048, while the sum is 28.

The square root of 218028241 is about 14765.7793901981. The cubic root of 218028241 is about 601.8721532538.

The spelling of 218028241 in words is "two hundred eighteen million, twenty-eight thousand, two hundred forty-one".