18094031 has 4 divisors (see below), whose sum is σ = 18880752. Its totient is φ = 17307312.

The previous prime is 18094009. The next prime is 18094033. The reversal of 18094031 is 13049081.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 18094031 - 2¹⁸ = 17831887 is a prime.

It is a super-2 number, since 2×18094031² = 654787915657922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18094033) 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, 393326 + ... + 393371.

It is an arithmetic number, because the mean of its divisors is an integer number (4720188).

Almost surely, 2^18094031 is an apocalyptic number.

18094031 is a deficient number, since it is larger than the sum of its proper divisors (786721).

18094031 is an equidigital number, since it uses as much as digits as its factorization.

18094031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786720.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 18094031 is about 4253.7079119281. The cubic root of 18094031 is about 262.5297006454.

The spelling of 18094031 in words is "eighteen million, ninety-four thousand, thirty-one".