1166111166 has 32 divisors (see below), whose sum is σ = 2613011328. Its totient is φ = 343815840.

The previous prime is 1166111161. The next prime is 1166111173. The reversal of 1166111166 is 6611116611.

It is a nude number because it is divisible by every one of its digits.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166111161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 236320 + ... + 241203.

It is an arithmetic number, because the mean of its divisors is an integer number (81656604).

Almost surely, 2^1166111166 is an apocalyptic number.

1166111166 is an abundant number, since it is smaller than the sum of its proper divisors (1446900162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1166111166 is a wasteful number, since it uses less digits than its factorization.

1166111166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477576.

The product of its digits is 1296, while the sum is 30.

The square root of 1166111166 is about 34148.3698878878. The cubic root of 1166111166 is about 1052.5594901331.

Adding to 1166111166 its reverse (6611116611), we get a palindrome (7777227777).

Subtracting 1166111166 from its reverse (6611116611), we obtain a palindrome (5445005445).

The spelling of 1166111166 in words is "one billion, one hundred sixty-six million, one hundred eleven thousand, one hundred sixty-six".