18044907 has 8 divisors (see below), whose sum is σ = 24619584. Its totient is φ = 11750088.

The previous prime is 18044899. The next prime is 18044933. The reversal of 18044907 is 70944081.

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

It is not a de Polignac number, because 18044907 - 2³ = 18044899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18044107) 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, 69813 + ... + 70070.

It is an arithmetic number, because the mean of its divisors is an integer number (3077448).

Almost surely, 2^18044907 is an apocalyptic number.

18044907 is a deficient number, since it is larger than the sum of its proper divisors (6574677).

18044907 is a wasteful number, since it uses less digits than its factorization.

18044907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139929.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 18044907 is about 4247.9297310572. The cubic root of 18044907 is about 262.2919021935.

Adding to 18044907 its reverse (70944081), we get a palindrome (88988988).

The spelling of 18044907 in words is "eighteen million, forty-four thousand, nine hundred seven".