18930005 has 8 divisors (see below), whose sum is σ = 22856352. Its totient is φ = 15050448.

The previous prime is 18929983. The next prime is 18930013. The reversal of 18930005 is 50003981.

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 18930005 - 2¹⁰ = 18928981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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, 10799 + ... + 12428.

It is an arithmetic number, because the mean of its divisors is an integer number (2857044).

Almost surely, 2^18930005 is an apocalyptic number.

It is an amenable number.

18930005 is a deficient number, since it is larger than the sum of its proper divisors (3926347).

18930005 is a wasteful number, since it uses less digits than its factorization.

18930005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23395.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 18930005 is about 4350.8625581602. The cubic root of 18930005 is about 266.5120866264.

Adding to 18930005 its reverse (50003981), we get a palindrome (68933986).

The spelling of 18930005 in words is "eighteen million, nine hundred thirty thousand, five".