218906168 has 16 divisors (see below), whose sum is σ = 442022280. Its totient is φ = 101033568.

The previous prime is 218906167. The next prime is 218906179. The reversal of 218906168 is 861609812.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218906167) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1052330 + ... + 1052537.

Almost surely, 2^218906168 is an apocalyptic number.

It is an amenable number.

218906168 is an abundant number, since it is smaller than the sum of its proper divisors (223116112).

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

218906168 is a wasteful number, since it uses less digits than its factorization.

218906168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2104886 (or 2104882 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 218906168 is about 14795.4779578086. The cubic root of 218906168 is about 602.6789174966.

The spelling of 218906168 in words is "two hundred eighteen million, nine hundred six thousand, one hundred sixty-eight".