18342005 has 8 divisors (see below), whose sum is σ = 24011424. Its totient is φ = 13339600.

The previous prime is 18341969. The next prime is 18342013. The reversal of 18342005 is 50024381.

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

It is not a de Polignac number, because 18342005 - 2⁶ = 18341941 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 (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166691 + ... + 166800.

It is an arithmetic number, because the mean of its divisors is an integer number (3001428).

Almost surely, 2^18342005 is an apocalyptic number.

It is an amenable number.

18342005 is a deficient number, since it is larger than the sum of its proper divisors (5669419).

18342005 is a wasteful number, since it uses less digits than its factorization.

18342005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333507.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 18342005 is about 4282.7567056745. The cubic root of 18342005 is about 263.7235637572.

Adding to 18342005 its reverse (50024381), we get a palindrome (68366386).

The spelling of 18342005 in words is "eighteen million, three hundred forty-two thousand, five".