18113133 has 4 divisors (see below), whose sum is σ = 24150848. Its totient is φ = 12075420.

The previous prime is 18113131. The next prime is 18113141. The reversal of 18113133 is 33131181.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 18113133 - 2¹ = 18113131 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18113131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3018853 + ... + 3018858.

It is an arithmetic number, because the mean of its divisors is an integer number (6037712).

Almost surely, 2^18113133 is an apocalyptic number.

It is an amenable number.

18113133 is a deficient number, since it is larger than the sum of its proper divisors (6037715).

18113133 is an equidigital number, since it uses as much as digits as its factorization.

18113133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6037714.

The product of its digits is 216, while the sum is 21.

The square root of 18113133 is about 4255.9526548118. The cubic root of 18113133 is about 262.6220529916.

The spelling of 18113133 in words is "eighteen million, one hundred thirteen thousand, one hundred thirty-three".