1161186166 has 16 divisors (see below), whose sum is σ = 1991658240. Its totient is φ = 497387880.

The previous prime is 1161186163. The next prime is 1161186167. The reversal of 1161186166 is 6616811611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161186163) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6751 + ... + 48661.

It is an arithmetic number, because the mean of its divisors is an integer number (124478640).

Almost surely, 2^1161186166 is an apocalyptic number.

1161186166 is a deficient number, since it is larger than the sum of its proper divisors (830472074).

1161186166 is a wasteful number, since it uses less digits than its factorization.

1161186166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43899.

The product of its digits is 10368, while the sum is 37.

The square root of 1161186166 is about 34076.1817990220. The cubic root of 1161186166 is about 1051.0755919959.

Adding to 1161186166 its reverse (6616811611), we get a palindrome (7777997777).

The spelling of 1161186166 in words is "one billion, one hundred sixty-one million, one hundred eighty-six thousand, one hundred sixty-six".