18340005 has 8 divisors (see below), whose sum is σ = 29344032. Its totient is φ = 9781328.

The previous prime is 18339913. The next prime is 18340019. The reversal of 18340005 is 50004381.

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 18340005 - 2⁹ = 18339493 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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, 611319 + ... + 611348.

It is an arithmetic number, because the mean of its divisors is an integer number (3668004).

Almost surely, 2^18340005 is an apocalyptic number.

18340005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18340005 is a deficient number, since it is larger than the sum of its proper divisors (11004027).

18340005 is a wasteful number, since it uses less digits than its factorization.

18340005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1222675.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 18340005 is about 4282.5232048408. The cubic root of 18340005 is about 263.7139779949.

Adding to 18340005 its reverse (50004381), we get a palindrome (68344386).

The spelling of 18340005 in words is "eighteen million, three hundred forty thousand, five".