1158166 has 4 divisors (see below), whose sum is σ = 1737252. Its totient is φ = 579082.

The previous prime is 1158161. The next prime is 1158187. The reversal of 1158166 is 6618511.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1158161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 289540 + ... + 289543.

It is an arithmetic number, because the mean of its divisors is an integer number (434313).

2^1158166 is an apocalyptic number.

1158166 is a deficient number, since it is larger than the sum of its proper divisors (579086).

1158166 is an equidigital number, since it uses as much as digits as its factorization.

1158166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 579085.

The product of its digits is 1440, while the sum is 28.

The square root of 1158166 is about 1076.1812115067. The cubic root of 1158166 is about 105.0163542176.

It can be divided in two parts, 115 and 8166, that added together give a square (8281 = 91²).

The spelling of 1158166 in words is "one million, one hundred fifty-eight thousand, one hundred sixty-six".