18224807418 has 48 divisors (see below), whose sum is σ = 40497440256. Its totient is φ = 5919842880.

The previous prime is 18224807411. The next prime is 18224807443. The reversal of 18224807418 is 81470842281.

18224807418 is a `hidden beast` number, since 1 + 8 + 224 + 8 + 0 + 7 + 418 = 666.

It is a super-3 number, since 3×18224807418³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (18224807411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 637671 + ... + 665637.

It is an arithmetic number, because the mean of its divisors is an integer number (843696672).

Almost surely, 2^18224807418 is an apocalyptic number.

18224807418 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

18224807418 is an abundant number, since it is smaller than the sum of its proper divisors (22272632838).

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

18224807418 is a wasteful number, since it uses less digits than its factorization.

18224807418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28899 (or 28896 counting only the distinct ones).

The product of its (nonzero) digits is 229376, while the sum is 45.

The spelling of 18224807418 in words is "eighteen billion, two hundred twenty-four million, eight hundred seven thousand, four hundred eighteen".