1321182166 has 16 divisors (see below), whose sum is σ = 2099268144. Its totient is φ = 621460224.

The previous prime is 1321182151. The next prime is 1321182227. The reversal of 1321182166 is 6612811231.

It is a super-3 number, since 3×1321182166³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85081 + ... + 99403.

It is an arithmetic number, because the mean of its divisors is an integer number (131204259).

Almost surely, 2^1321182166 is an apocalyptic number.

1321182166 is a deficient number, since it is larger than the sum of its proper divisors (778085978).

1321182166 is a wasteful number, since it uses less digits than its factorization.

1321182166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17055.

The product of its digits is 3456, while the sum is 31.

The square root of 1321182166 is about 36348.0696323753. The cubic root of 1321182166 is about 1097.2886850902.

Adding to 1321182166 its reverse (6612811231), we get a palindrome (7933993397).

The spelling of 1321182166 in words is "one billion, three hundred twenty-one million, one hundred eighty-two thousand, one hundred sixty-six".