18224479 has 16 divisors (see below), whose sum is σ = 22543360. Its totient is φ = 14346720.

The previous prime is 18224449. The next prime is 18224491. The reversal of 18224479 is 97442281.

It is a cyclic number.

It is not a de Polignac number, because 18224479 - 2¹¹ = 18222431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18224419) 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 15 ways as a sum of consecutive naturals, for example, 24292 + ... + 25030.

It is an arithmetic number, because the mean of its divisors is an integer number (1408960).

Almost surely, 2^18224479 is an apocalyptic number.

18224479 is a deficient number, since it is larger than the sum of its proper divisors (4318881).

18224479 is a wasteful number, since it uses less digits than its factorization.

18224479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030.

The product of its digits is 32256, while the sum is 37.

The square root of 18224479 is about 4269.0138205445. The cubic root of 18224479 is about 263.1590887391.

The spelling of 18224479 in words is "eighteen million, two hundred twenty-four thousand, four hundred seventy-nine".