18027071 has 4 divisors (see below), whose sum is σ = 18099144. Its totient is φ = 17955000.

The previous prime is 18027059. The next prime is 18027169. The reversal of 18027071 is 17072081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17072081 = 13 ⋅1313237.

It is a cyclic number.

It is not a de Polignac number, because 18027071 - 2¹⁴ = 18010687 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 18027071.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18027011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35660 + ... + 36161.

It is an arithmetic number, because the mean of its divisors is an integer number (4524786).

Almost surely, 2^18027071 is an apocalyptic number.

18027071 is a deficient number, since it is larger than the sum of its proper divisors (72073).

18027071 is an equidigital number, since it uses as much as digits as its factorization.

18027071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72072.

The product of its (nonzero) digits is 784, while the sum is 26.

The square root of 18027071 is about 4245.8298364395. The cubic root of 18027071 is about 262.2054552610.

The spelling of 18027071 in words is "eighteen million, twenty-seven thousand, seventy-one".