218732916894 has 8 divisors (see below), whose sum is σ = 437465833800. Its totient is φ = 72910972296.

The previous prime is 218732916893. The next prime is 218732916923. The reversal of 218732916894 is 498619237812.

It is a sphenic number, since it is the product of 3 distinct primes.

218732916894 is an admirable number.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218732916893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18227743069 + ... + 18227743080.

It is an arithmetic number, because the mean of its divisors is an integer number (54683229225).

Almost surely, 2^218732916894 is an apocalyptic number.

218732916894 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

218732916894 is a wasteful number, since it uses less digits than its factorization.

218732916894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36455486154.

The product of its digits is 10450944, while the sum is 60.

The spelling of 218732916894 in words is "two hundred eighteen billion, seven hundred thirty-two million, nine hundred sixteen thousand, eight hundred ninety-four".