454221918 has 24 divisors (see below), whose sum is σ = 1020598488. Its totient is φ = 151407144.

The previous prime is 454221907. The next prime is 454221967. The reversal of 454221918 is 819122454.

454221918 is a `hidden beast` number, since 4 + 542 + 21 + 91 + 8 = 666.

It is a plaindrome in base 14.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 466821 + ... + 467792.

It is an arithmetic number, because the mean of its divisors is an integer number (42524937).

Almost surely, 2^454221918 is an apocalyptic number.

454221918 is an abundant number, since it is smaller than the sum of its proper divisors (566376570).

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

454221918 is an equidigital number, since it uses as much as digits as its factorization.

454221918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 934630 (or 934618 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 454221918 is about 21312.4826803449. The cubic root of 454221918 is about 768.6984917303.

The spelling of 454221918 in words is "four hundred fifty-four million, two hundred twenty-one thousand, nine hundred eighteen".