218213159 has 2 divisors, whose sum is σ = 218213160. Its totient is φ = 218213158.

The previous prime is 218213143. The next prime is 218213183. The reversal of 218213159 is 951312812.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 218213159 - 2⁴ = 218213143 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (218213959) 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, 109106579 + 109106580.

It is an arithmetic number, because the mean of its divisors is an integer number (109106580).

Almost surely, 2^218213159 is an apocalyptic number.

218213159 is a deficient number, since it is larger than the sum of its proper divisors (1).

218213159 is an equidigital number, since it uses as much as digits as its factorization.

218213159 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 32.

The square root of 218213159 is about 14772.0397711352. The cubic root of 218213159 is about 602.0422620191.

The spelling of 218213159 in words is "two hundred eighteen million, two hundred thirteen thousand, one hundred fifty-nine".