218730059 has 2 divisors, whose sum is σ = 218730060. Its totient is φ = 218730058.

The previous prime is 218730013. The next prime is 218730073. The reversal of 218730059 is 950037812.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-218730059 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (218730089) 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, 109365029 + 109365030.

It is an arithmetic number, because the mean of its divisors is an integer number (109365030).

Almost surely, 2^218730059 is an apocalyptic number.

218730059 is a deficient number, since it is larger than the sum of its proper divisors (1).

218730059 is an equidigital number, since it uses as much as digits as its factorization.

218730059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 218730059 is about 14789.5253135454. The cubic root of 218730059 is about 602.5172566696.

The spelling of 218730059 in words is "two hundred eighteen million, seven hundred thirty thousand, fifty-nine".