1166182213 has 6 divisors (see below), whose sum is σ = 1356579366. Its totient is φ = 999584712.

The previous prime is 1166182207. The next prime is 1166182217. The reversal of 1166182213 is 3122816611.

It can be written as a sum of positive squares in only one way, i.e., 1073676289 + 92505924 = 32767^2 + 9618^2 .

It is not a de Polignac number, because 1166182213 - 2⁵ = 1166182181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166182217) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11899770 + ... + 11899867.

It is an arithmetic number, because the mean of its divisors is an integer number (226096561).

Almost surely, 2^1166182213 is an apocalyptic number.

It is an amenable number.

1166182213 is a deficient number, since it is larger than the sum of its proper divisors (190397153).

1166182213 is an equidigital number, since it uses as much as digits as its factorization.

1166182213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23799651 (or 23799644 counting only the distinct ones).

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

The square root of 1166182213 is about 34149.4101413187. The cubic root of 1166182213 is about 1052.5808659326.

Adding to 1166182213 its reverse (3122816611), we get a palindrome (4288998824).

The spelling of 1166182213 in words is "one billion, one hundred sixty-six million, one hundred eighty-two thousand, two hundred thirteen".