218442108 has 24 divisors (see below), whose sum is σ = 514212048. Its totient is φ = 72169216.

The previous prime is 218442067. The next prime is 218442121. The reversal of 218442108 is 801244812.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79191 + ... + 81902.

It is an arithmetic number, because the mean of its divisors is an integer number (21425502).

Almost surely, 2^218442108 is an apocalyptic number.

It is an amenable number.

218442108 is an abundant number, since it is smaller than the sum of its proper divisors (295769940).

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

218442108 is a wasteful number, since it uses less digits than its factorization.

218442108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161213 (or 161211 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 30.

The square root of 218442108 is about 14779.7871432575. The cubic root of 218442108 is about 602.2527424448.

The spelling of 218442108 in words is "two hundred eighteen million, four hundred forty-two thousand, one hundred eight".