18494479224 has 512 divisors, whose sum is σ = 60129484800. Its totient is φ = 5290790400.

The previous prime is 18494479187. The next prime is 18494479247. The reversal of 18494479224 is 42297449481.

18494479224 is a `hidden beast` number, since 1 + 8 + 494 + 47 + 92 + 24 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 303188154 + ... + 303188214.

It is an arithmetic number, because the mean of its divisors is an integer number (117440400).

Almost surely, 2^18494479224 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18494479224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30064742400).

18494479224 is an abundant number, since it is smaller than the sum of its proper divisors (41635005576).

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

18494479224 is a wasteful number, since it uses less digits than its factorization.

18494479224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175 (or 153 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 54.

The spelling of 18494479224 in words is "eighteen billion, four hundred ninety-four million, four hundred seventy-nine thousand, two hundred twenty-four".