1188166 has 8 divisors (see below), whose sum is σ = 2036880. Its totient is φ = 509208.

The previous prime is 1188151. The next prime is 1188167. The reversal of 1188166 is 6618811.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1188167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42421 + ... + 42448.

It is an arithmetic number, because the mean of its divisors is an integer number (254610).

2^1188166 is an apocalyptic number.

1188166 is a deficient number, since it is larger than the sum of its proper divisors (848714).

1188166 is an equidigital number, since it uses as much as digits as its factorization.

1188166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84878.

The product of its digits is 2304, while the sum is 31.

The square root of 1188166 is about 1090.0302748089. The cubic root of 1188166 is about 105.9153828084.

The spelling of 1188166 in words is "one million, one hundred eighty-eight thousand, one hundred sixty-six".