218812814386 has 32 divisors (see below), whose sum is σ = 338592279168. Its totient is φ = 105992409600.

The previous prime is 218812814383. The next prime is 218812814401. The reversal of 218812814386 is 683418218812.

It is a super-3 number, since 3×218812814386³ (a number of 35 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (218812814383) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8727060 + ... + 8752096.

It is an arithmetic number, because the mean of its divisors is an integer number (10581008724).

Almost surely, 2^218812814386 is an apocalyptic number.

218812814386 is a deficient number, since it is larger than the sum of its proper divisors (119779464782).

218812814386 is a wasteful number, since it uses less digits than its factorization.

218812814386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25906.

The product of its digits is 1179648, while the sum is 52.

The spelling of 218812814386 in words is "two hundred eighteen billion, eight hundred twelve million, eight hundred fourteen thousand, three hundred eighty-six".