1166160211 has 4 divisors (see below), whose sum is σ = 1166517000. Its totient is φ = 1165803424.

The previous prime is 1166160187. The next prime is 1166160221. The reversal of 1166160211 is 1120616611.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1166160211 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1166160221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 173446 + ... + 180043.

It is an arithmetic number, because the mean of its divisors is an integer number (291629250).

Almost surely, 2^1166160211 is an apocalyptic number.

1166160211 is a deficient number, since it is larger than the sum of its proper divisors (356789).

1166160211 is an equidigital number, since it uses as much as digits as its factorization.

1166160211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356788.

The product of its (nonzero) digits is 432, while the sum is 25.

The square root of 1166160211 is about 34149.0879966069. The cubic root of 1166160211 is about 1052.5742463181.

Adding to 1166160211 its reverse (1120616611), we get a palindrome (2286776822).

The spelling of 1166160211 in words is "one billion, one hundred sixty-six million, one hundred sixty thousand, two hundred eleven".