18116163 has 16 divisors (see below), whose sum is σ = 28903840. Its totient is φ = 11148192.

The previous prime is 18116149. The next prime is 18116167. The reversal of 18116163 is 36161181.

It is not a de Polignac number, because 18116163 - 2⁶ = 18116099 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18116167) 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 15 ways as a sum of consecutive naturals, for example, 25456 + ... + 26157.

It is an arithmetic number, because the mean of its divisors is an integer number (1806490).

Almost surely, 2^18116163 is an apocalyptic number.

18116163 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

18116163 is a deficient number, since it is larger than the sum of its proper divisors (10787677).

18116163 is a wasteful number, since it uses less digits than its factorization.

18116163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51635 (or 51629 counting only the distinct ones).

The product of its digits is 864, while the sum is 27.

The square root of 18116163 is about 4256.3086119312. The cubic root of 18116163 is about 262.6366961504.

The spelling of 18116163 in words is "eighteen million, one hundred sixteen thousand, one hundred sixty-three".