218030238289 has 4 divisors (see below), whose sum is σ = 221016953956. Its totient is φ = 215043522624.

The previous prime is 218030238277. The next prime is 218030238301. The reversal of 218030238289 is 982832030812.

218030238289 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (218030238277) and next prime (218030238301).

It can be written as a sum of positive squares in 2 ways, for example, as 62396043264 + 155634195025 = 249792^2 + 394505^2 .

It is a cyclic number.

It is not a de Polignac number, because 218030238289 - 2²⁵ = 217996683857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (218030238259) 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 in 3 ways as a sum of consecutive naturals, for example, 1493357724 + ... + 1493357869.

It is an arithmetic number, because the mean of its divisors is an integer number (55254238489).

Almost surely, 2^218030238289 is an apocalyptic number.

It is an amenable number.

218030238289 is a deficient number, since it is larger than the sum of its proper divisors (2986715667).

218030238289 is an equidigital number, since it uses as much as digits as its factorization.

218030238289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2986715666.

The product of its (nonzero) digits is 331776, while the sum is 46.

The spelling of 218030238289 in words is "two hundred eighteen billion, thirty million, two hundred thirty-eight thousand, two hundred eighty-nine".