18030133 has 8 divisors (see below), whose sum is σ = 19781280. Its totient is φ = 16297680.

The previous prime is 18030121. The next prime is 18030143. The reversal of 18030133 is 33103081.

It is the 1734-th star 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 18030133 - 2⁵ = 18030101 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18030133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18030113) 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, 2610 + ... + 6547.

It is an arithmetic number, because the mean of its divisors is an integer number (2472660).

Almost surely, 2^18030133 is an apocalyptic number.

It is an amenable number.

18030133 is a deficient number, since it is larger than the sum of its proper divisors (1751147).

18030133 is a wasteful number, since it uses less digits than its factorization.

18030133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9347.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 18030133 is about 4246.1904102383. The cubic root of 18030133 is about 262.2203001139.

The spelling of 18030133 in words is "eighteen million, thirty thousand, one hundred thirty-three".