18074209 has 8 divisors (see below), whose sum is σ = 18869760. Its totient is φ = 17292000.

The previous prime is 18074141. The next prime is 18074227. The reversal of 18074209 is 90247081.

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 18074209 - 2⁹ = 18073697 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18074249) 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 7 ways as a sum of consecutive naturals, for example, 517 + ... + 6034.

It is an arithmetic number, because the mean of its divisors is an integer number (2358720).

Almost surely, 2^18074209 is an apocalyptic number.

It is an amenable number.

18074209 is a deficient number, since it is larger than the sum of its proper divisors (795551).

18074209 is an equidigital number, since it uses as much as digits as its factorization.

18074209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6671.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 18074209 is about 4251.3773062385. The cubic root of 18074209 is about 262.4337985740.

The spelling of 18074209 in words is "eighteen million, seventy-four thousand, two hundred nine".