218114394 has 32 divisors (see below), whose sum is σ = 455958720. Its totient is φ = 69468672.

The previous prime is 218114389. The next prime is 218114411. The reversal of 218114394 is 493411812.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10417 + ... + 23339.

It is an arithmetic number, because the mean of its divisors is an integer number (14248710).

Almost surely, 2^218114394 is an apocalyptic number.

218114394 is an abundant number, since it is smaller than the sum of its proper divisors (237844326).

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

218114394 is a wasteful number, since it uses less digits than its factorization.

218114394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13054.

The product of its digits is 6912, while the sum is 33.

The square root of 218114394 is about 14768.6964218241. The cubic root of 218114394 is about 601.9514186172.

The spelling of 218114394 in words is "two hundred eighteen million, one hundred fourteen thousand, three hundred ninety-four".