18016127 has 4 divisors (see below), whose sum is σ = 18124176. Its totient is φ = 17908080.

The previous prime is 18016109. The next prime is 18016133. The reversal of 18016127 is 72161081.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72161081 = 281 ⋅256801.

It is a cyclic number.

It is not a de Polignac number, because 18016127 - 2¹⁴ = 17999743 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18016096 and 18016105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18016147) 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, 53774 + ... + 54107.

It is an arithmetic number, because the mean of its divisors is an integer number (4531044).

Almost surely, 2^18016127 is an apocalyptic number.

18016127 is a deficient number, since it is larger than the sum of its proper divisors (108049).

18016127 is a wasteful number, since it uses less digits than its factorization.

18016127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108048.

The product of its (nonzero) digits is 672, while the sum is 26.

The square root of 18016127 is about 4244.5408467819. The cubic root of 18016127 is about 262.1523840144.

The spelling of 18016127 in words is "eighteen million, sixteen thousand, one hundred twenty-seven".