18424799 has 8 divisors (see below), whose sum is σ = 19100928. Its totient is φ = 17760600.

The previous prime is 18424751. The next prime is 18424807. The reversal of 18424799 is 99742481.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18424799 - 2²⁰ = 17376223 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 (18424709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224 + ... + 6074.

It is an arithmetic number, because the mean of its divisors is an integer number (2387616).

Almost surely, 2^18424799 is an apocalyptic number.

18424799 is a deficient number, since it is larger than the sum of its proper divisors (676129).

18424799 is an equidigital number, since it uses as much as digits as its factorization.

18424799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5965.

The product of its digits is 145152, while the sum is 44.

The square root of 18424799 is about 4292.4117929202. The cubic root of 18424799 is about 264.1197755782.

The spelling of 18424799 in words is "eighteen million, four hundred twenty-four thousand, seven hundred ninety-nine".