18046138 has 8 divisors (see below), whose sum is σ = 29530080. Its totient is φ = 8202780.

The previous prime is 18046103. The next prime is 18046139. The reversal of 18046138 is 83164081.

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

It is not an unprimeable number, because it can be changed into a prime (18046139) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 410118 + ... + 410161.

It is an arithmetic number, because the mean of its divisors is an integer number (3691260).

Almost surely, 2^18046138 is an apocalyptic number.

18046138 is a deficient number, since it is larger than the sum of its proper divisors (11483942).

18046138 is a wasteful number, since it uses less digits than its factorization.

18046138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 820292.

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 18046138 is about 4248.0746226967. The cubic root of 18046138 is about 262.2978664616.

The spelling of 18046138 in words is "eighteen million, forty-six thousand, one hundred thirty-eight".