18005133 has 8 divisors (see below), whose sum is σ = 24035328. Its totient is φ = 11989184.

The previous prime is 18005129. The next prime is 18005147. The reversal of 18005133 is 33150081.

It is a happy number.

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 18005133 - 2² = 18005129 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18005233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141 + ... + 6002.

It is an arithmetic number, because the mean of its divisors is an integer number (3004416).

Almost surely, 2^18005133 is an apocalyptic number.

It is an amenable number.

18005133 is a deficient number, since it is larger than the sum of its proper divisors (6030195).

18005133 is an equidigital number, since it uses as much as digits as its factorization.

18005133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7123.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 18005133 is about 4243.2455738503. The cubic root of 18005133 is about 262.0990486562.

The spelling of 18005133 in words is "eighteen million, five thousand, one hundred thirty-three".