218922414 has 16 divisors (see below), whose sum is σ = 449678928. Its totient is φ = 71001792.

The previous prime is 218922343. The next prime is 218922437. The reversal of 218922414 is 414229812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 492847 + ... + 493290.

It is an arithmetic number, because the mean of its divisors is an integer number (28104933).

Almost surely, 2^218922414 is an apocalyptic number.

218922414 is an abundant number, since it is smaller than the sum of its proper divisors (230756514).

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

218922414 is a wasteful number, since it uses less digits than its factorization.

218922414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 986179.

The product of its digits is 9216, while the sum is 33.

The square root of 218922414 is about 14796.0269667232. The cubic root of 218922414 is about 602.6938262885.

The spelling of 218922414 in words is "two hundred eighteen million, nine hundred twenty-two thousand, four hundred fourteen".