229981689218 has 6 divisors (see below), whose sum is σ = 344973551139. Its totient is φ = 114990505506.

The previous prime is 229981689209. The next prime is 229981689229. The reversal of 229981689218 is 812986189922.

229981689218 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 114990844609 + 114990844609 = 339103^2 + 339103^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=339103.

It is a Duffinian number.

It is an unprimeable number.

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 2 ways as a sum of consecutive naturals, for example, 508655 + ... + 847757.

Almost surely, 2^229981689218 is an apocalyptic number.

229981689218 is a deficient number, since it is larger than the sum of its proper divisors (114991861921).

229981689218 is an frugal number, since it uses more digits than its factorization.

229981689218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678208 (or 339105 counting only the distinct ones).

The product of its digits is 17915904, while the sum is 65.

The spelling of 229981689218 in words is "two hundred twenty-nine billion, nine hundred eighty-one million, six hundred eighty-nine thousand, two hundred eighteen".