118278163 has 6 divisors (see below), whose sum is σ = 125645276. Its totient is φ = 111320352.

The previous prime is 118278157. The next prime is 118278187. The reversal of 118278163 is 361872811.

It is not a de Polignac number, because 118278163 - 2²⁵ = 84723731 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (118278103) 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 5 ways as a sum of consecutive naturals, for example, 204345 + ... + 204922.

Almost surely, 2^118278163 is an apocalyptic number.

118278163 is a deficient number, since it is larger than the sum of its proper divisors (7367113).

118278163 is an equidigital number, since it uses as much as digits as its factorization.

118278163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 409301 (or 409284 counting only the distinct ones).

The product of its digits is 16128, while the sum is 37.

The square root of 118278163 is about 10875.5764444925. The cubic root of 118278163 is about 490.8719211091.

The spelling of 118278163 in words is "one hundred eighteen million, two hundred seventy-eight thousand, one hundred sixty-three".