18117127 has 16 divisors (see below), whose sum is σ = 21945600. Its totient is φ = 14610240.

The previous prime is 18117119. The next prime is 18117167. The reversal of 18117127 is 72171181.

It is not a de Polignac number, because 18117127 - 2³ = 18117119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18117095 and 18117104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18117167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23427 + ... + 24187.

It is an arithmetic number, because the mean of its divisors is an integer number (1371600).

Almost surely, 2^18117127 is an apocalyptic number.

18117127 is a deficient number, since it is larger than the sum of its proper divisors (3828473).

18117127 is a wasteful number, since it uses less digits than its factorization.

18117127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 966.

The product of its digits is 784, while the sum is 28.

The square root of 18117127 is about 4256.4218540929. The cubic root of 18117127 is about 262.6413545557.

The spelling of 18117127 in words is "eighteen million, one hundred seventeen thousand, one hundred twenty-seven".