18449299 has 4 divisors (see below), whose sum is σ = 20126520. Its totient is φ = 16772080.

The previous prime is 18449293. The next prime is 18449311. The reversal of 18449299 is 99294481.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18449299 - 2¹¹ = 18447251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18449293) 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, 838594 + ... + 838615.

It is an arithmetic number, because the mean of its divisors is an integer number (5031630).

Almost surely, 2^18449299 is an apocalyptic number.

18449299 is a deficient number, since it is larger than the sum of its proper divisors (1677221).

18449299 is a wasteful number, since it uses less digits than its factorization.

18449299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1677220.

The product of its digits is 186624, while the sum is 46.

The square root of 18449299 is about 4295.2647182682. The cubic root of 18449299 is about 264.2367930180.

The spelling of 18449299 in words is "eighteen million, four hundred forty-nine thousand, two hundred ninety-nine".