118131886 has 12 divisors (see below), whose sum is σ = 183101256. Its totient is φ = 57159660.

The previous prime is 118131869. The next prime is 118131889. The reversal of 118131886 is 688131811.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118131889) 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 5 ways as a sum of consecutive naturals, for example, 28810 + ... + 32653.

It is an arithmetic number, because the mean of its divisors is an integer number (15258438).

Almost surely, 2^118131886 is an apocalyptic number.

118131886 is a deficient number, since it is larger than the sum of its proper divisors (64969370).

118131886 is an equidigital number, since it uses as much as digits as its factorization.

118131886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61527 (or 61496 counting only the distinct ones).

The product of its digits is 9216, while the sum is 37.

The square root of 118131886 is about 10868.8493411216. The cubic root of 118131886 is about 490.6694805494.

The spelling of 118131886 in words is "one hundred eighteen million, one hundred thirty-one thousand, eight hundred eighty-six".