455218218 has 224 divisors, whose sum is σ = 1304464896. Its totient is φ = 115893504.

The previous prime is 455218193. The next prime is 455218237. The reversal of 455218218 is 812812554.

455218218 is a `hidden beast` number, since 45 + 521 + 82 + 18 = 666.

Its product of digits (25600) is a multiple of the sum of its prime factors (160).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 6235830 + ... + 6235902.

It is an arithmetic number, because the mean of its divisors is an integer number (5823504).

Almost surely, 2^455218218 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 455218218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (652232448).

455218218 is an abundant number, since it is smaller than the sum of its proper divisors (849246678).

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

455218218 is a wasteful number, since it uses less digits than its factorization.

455218218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160 (or 145 counting only the distinct ones).

The product of its digits is 25600, while the sum is 36.

The square root of 455218218 is about 21335.8435033631. The cubic root of 455218218 is about 769.2601078415.

The spelling of 455218218 in words is "four hundred fifty-five million, two hundred eighteen thousand, two hundred eighteen".