1166236113 has 24 divisors (see below), whose sum is σ = 1811000352. Its totient is φ = 665630784.

The previous prime is 1166236087. The next prime is 1166236129. The reversal of 1166236113 is 3116326611.

It is not a de Polignac number, because 1166236113 - 2¹⁰ = 1166235089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1166236163) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 133506 + ... + 141972.

It is an arithmetic number, because the mean of its divisors is an integer number (75458348).

Almost surely, 2^1166236113 is an apocalyptic number.

It is an amenable number.

1166236113 is a deficient number, since it is larger than the sum of its proper divisors (644764239).

1166236113 is an equidigital number, since it uses as much as digits as its factorization.

1166236113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9421 (or 9414 counting only the distinct ones).

The product of its digits is 3888, while the sum is 30.

The square root of 1166236113 is about 34150.1993112778. The cubic root of 1166236113 is about 1052.5970821619.

The spelling of 1166236113 in words is "one billion, one hundred sixty-six million, two hundred thirty-six thousand, one hundred thirteen".