18448999 has 4 divisors (see below), whose sum is σ = 19044160. Its totient is φ = 17853840.

The previous prime is 18448973. The next prime is 18449003. The reversal of 18448999 is 99984481.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99984481 = 599 ⋅166919.

It is a cyclic number.

It is not a de Polignac number, because 18448999 - 2¹¹ = 18446951 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 (18448939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 297534 + ... + 297595.

It is an arithmetic number, because the mean of its divisors is an integer number (4761040).

Almost surely, 2^18448999 is an apocalyptic number.

18448999 is a deficient number, since it is larger than the sum of its proper divisors (595161).

18448999 is an equidigital number, since it uses as much as digits as its factorization.

18448999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 595160.

The product of its digits is 746496, while the sum is 52.

The square root of 18448999 is about 4295.2297959481. The cubic root of 18448999 is about 264.2353607781.

The spelling of 18448999 in words is "eighteen million, four hundred forty-eight thousand, nine hundred ninety-nine".