218449944814 has 4 divisors (see below), whose sum is σ = 327674917224. Its totient is φ = 109224972406.

The previous prime is 218449944773. The next prime is 218449944863. The reversal of 218449944814 is 418449944812.

It is a happy number.

218449944814 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 a congruent 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 as a sum of consecutive naturals, namely, 54612486202 + ... + 54612486205.

It is an arithmetic number, because the mean of its divisors is an integer number (81918729306).

Almost surely, 2^218449944814 is an apocalyptic number.

218449944814 is a deficient number, since it is larger than the sum of its proper divisors (109224972410).

218449944814 is a wasteful number, since it uses less digits than its factorization.

218449944814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109224972409.

The product of its digits is 10616832, while the sum is 58.

The spelling of 218449944814 in words is "two hundred eighteen billion, four hundred forty-nine million, nine hundred forty-four thousand, eight hundred fourteen".