18804709 has 8 divisors (see below), whose sum is σ = 23444928. Its totient is φ = 14652960.

The previous prime is 18804707. The next prime is 18804719. The reversal of 18804709 is 90740881.

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

It is not a de Polignac number, because 18804709 - 2¹ = 18804707 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 (18804707) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 122032 + ... + 122185.

It is an arithmetic number, because the mean of its divisors is an integer number (2930616).

Almost surely, 2^18804709 is an apocalyptic number.

It is an amenable number.

18804709 is a deficient number, since it is larger than the sum of its proper divisors (4640219).

18804709 is a wasteful number, since it uses less digits than its factorization.

18804709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244235.

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 18804709 is about 4336.4396686683. The cubic root of 18804709 is about 265.9227780061.

The spelling of 18804709 in words is "eighteen million, eight hundred four thousand, seven hundred nine".