18044507 has 8 divisors (see below), whose sum is σ = 19723536. Its totient is φ = 16407072.

The previous prime is 18044479. The next prime is 18044519. The reversal of 18044507 is 70544081.

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 18044507 - 2¹² = 18040411 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18044507.

It is not an unprimeable number, because it can be changed into a prime (18044557) 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 7 ways as a sum of consecutive naturals, for example, 9488 + ... + 11229.

It is an arithmetic number, because the mean of its divisors is an integer number (2465442).

Almost surely, 2^18044507 is an apocalyptic number.

18044507 is a deficient number, since it is larger than the sum of its proper divisors (1679029).

18044507 is a wasteful number, since it uses less digits than its factorization.

18044507 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20797.

The product of its (nonzero) digits is 4480, while the sum is 29.

The square root of 18044507 is about 4247.8826490382. The cubic root of 18044507 is about 262.2899641114.

Adding to 18044507 its reverse (70544081), we get a palindrome (88588588).

The spelling of 18044507 in words is "eighteen million, forty-four thousand, five hundred seven".