18016071 has 4 divisors (see below), whose sum is σ = 24021432. Its totient is φ = 12010712.

The previous prime is 18016069. The next prime is 18016079. The reversal of 18016071 is 17061081.

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 18016071 - 2¹ = 18016069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18016079) 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, 3002676 + ... + 3002681.

It is an arithmetic number, because the mean of its divisors is an integer number (6005358).

Almost surely, 2^18016071 is an apocalyptic number.

18016071 is a deficient number, since it is larger than the sum of its proper divisors (6005361).

18016071 is an equidigital number, since it uses as much as digits as its factorization.

18016071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6005360.

The product of its (nonzero) digits is 336, while the sum is 24.

The square root of 18016071 is about 4244.5342500680. The cubic root of 18016071 is about 262.1521123957.

The spelling of 18016071 in words is "eighteen million, sixteen thousand, seventy-one".