18133039 has 4 divisors (see below), whose sum is σ = 18921456. Its totient is φ = 17344624.

The previous prime is 18133019. The next prime is 18133051. The reversal of 18133039 is 93033181.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 93033181 = 1279 ⋅72739.

It is a cyclic number.

It is not a de Polignac number, because 18133039 - 2⁵ = 18133007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18132998 and 18133016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18133009) 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, 394174 + ... + 394219.

It is an arithmetic number, because the mean of its divisors is an integer number (4730364).

Almost surely, 2^18133039 is an apocalyptic number.

18133039 is a deficient number, since it is larger than the sum of its proper divisors (788417).

18133039 is an equidigital number, since it uses as much as digits as its factorization.

18133039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 788416.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 18133039 is about 4258.2906194857. The cubic root of 18133039 is about 262.7182233722.

The spelling of 18133039 in words is "eighteen million, one hundred thirty-three thousand, thirty-nine".