18224983 has 4 divisors (see below), whose sum is σ = 20828560. Its totient is φ = 15621408.

The previous prime is 18224959. The next prime is 18225013. The reversal of 18224983 is 38942281.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38942281 = 7 ⋅5563183.

It is a cyclic number.

It is not a de Polignac number, because 18224983 - 2²¹ = 16127831 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18224953) 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 3 ways as a sum of consecutive naturals, for example, 1301778 + ... + 1301791.

It is an arithmetic number, because the mean of its divisors is an integer number (5207140).

Almost surely, 2^18224983 is an apocalyptic number.

18224983 is a deficient number, since it is larger than the sum of its proper divisors (2603577).

18224983 is an equidigital number, since it uses as much as digits as its factorization.

18224983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2603576.

The product of its digits is 27648, while the sum is 37.

The square root of 18224983 is about 4269.0728501631. The cubic root of 18224983 is about 263.1615146148.

The spelling of 18224983 in words is "eighteen million, two hundred twenty-four thousand, nine hundred eighty-three".