118641166 has 16 divisors (see below), whose sum is σ = 208882656. Its totient is φ = 49471776.

The previous prime is 118641163. The next prime is 118641169. The reversal of 118641166 is 661146811.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (118641163) and next prime (118641169).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (118641161) 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 7 ways as a sum of consecutive naturals, for example, 114001 + ... + 115036.

It is an arithmetic number, because the mean of its divisors is an integer number (13055166).

Almost surely, 2^118641166 is an apocalyptic number.

118641166 is a deficient number, since it is larger than the sum of its proper divisors (90241490).

118641166 is a wasteful number, since it uses less digits than its factorization.

118641166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229083.

The product of its digits is 6912, while the sum is 34.

The square root of 118641166 is about 10892.2525677658. The cubic root of 118641166 is about 491.3735803494.

Adding to 118641166 its reverse (661146811), we get a palindrome (779787977).

The spelling of 118641166 in words is "one hundred eighteen million, six hundred forty-one thousand, one hundred sixty-six".