218840681219 has 8 divisors (see below), whose sum is σ = 219861124032. Its totient is φ = 217821804480.

The previous prime is 218840681207. The next prime is 218840681263. The reversal of 218840681219 is 912186048812.

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

It is a cyclic number.

It is not a de Polignac number, because 218840681219 - 2¹² = 218840677123 is a prime.

It is a super-2 number, since 2×218840681219² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (218840686219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110924 + ... + 670809.

It is an arithmetic number, because the mean of its divisors is an integer number (27482640504).

Almost surely, 2^218840681219 is an apocalyptic number.

218840681219 is a deficient number, since it is larger than the sum of its proper divisors (1020442813).

218840681219 is a wasteful number, since it uses less digits than its factorization.

218840681219 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 783037.

The product of its (nonzero) digits is 442368, while the sum is 50.

The spelling of 218840681219 in words is "two hundred eighteen billion, eight hundred forty million, six hundred eighty-one thousand, two hundred nineteen".