18034859 has 4 divisors (see below), whose sum is σ = 18304104. Its totient is φ = 17765616.

The previous prime is 18034847. The next prime is 18034867. The reversal of 18034859 is 95843081.

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 18034859 - 2⁴ = 18034843 is a prime.

It is a super-2 number, since 2×18034859² = 650512278299762, 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, 134522 + ... + 134655.

It is an arithmetic number, because the mean of its divisors is an integer number (4576026).

Almost surely, 2^18034859 is an apocalyptic number.

18034859 is a deficient number, since it is larger than the sum of its proper divisors (269245).

18034859 is an equidigital number, since it uses as much as digits as its factorization.

18034859 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269244.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 18034859 is about 4246.7468726073. The cubic root of 18034859 is about 262.2432088907.

The spelling of 18034859 in words is "eighteen million, thirty-four thousand, eight hundred fifty-nine".