18034873 has 4 divisors (see below), whose sum is σ = 18522340. Its totient is φ = 17547408.

The previous prime is 18034867. The next prime is 18034879. The reversal of 18034873 is 37843081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37843081 = 383 ⋅98807.

It is an interprime number because it is at equal distance from previous prime (18034867) and next prime (18034879).

It can be written as a sum of positive squares in 2 ways, for example, as 17413929 + 620944 = 4173^2 + 788^2 .

It is a cyclic number.

It is not a de Polignac number, because 18034873 - 2⁹ = 18034361 is a prime.

It is a super-2 number, since 2×18034873² = 650513288252258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18034879) 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, 243678 + ... + 243751.

It is an arithmetic number, because the mean of its divisors is an integer number (4630585).

Almost surely, 2^18034873 is an apocalyptic number.

It is an amenable number.

18034873 is a deficient number, since it is larger than the sum of its proper divisors (487467).

18034873 is an equidigital number, since it uses as much as digits as its factorization.

18034873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487466.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 18034873 is about 4246.7485209275. The cubic root of 18034873 is about 262.2432767482.

It can be divided in two parts, 180 and 34873, that added together give a palindrome (35053).

The spelling of 18034873 in words is "eighteen million, thirty-four thousand, eight hundred seventy-three".