1166889911 has 8 divisors (see below), whose sum is σ = 1347851664. Its totient is φ = 998408320.

The previous prime is 1166889869. The next prime is 1166889917. The reversal of 1166889911 is 1199886611.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1166889911 - 2²² = 1162695607 is a prime.

1166889911 is a strobogrammatic number because it is the same when read upside-down.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 1166889911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166889917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3119840 + ... + 3120213.

It is an arithmetic number, because the mean of its divisors is an integer number (168481458).

Almost surely, 2^1166889911 is an apocalyptic number.

1166889911 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1166889911 is a deficient number, since it is larger than the sum of its proper divisors (180961753).

1166889911 is a wasteful number, since it uses less digits than its factorization.

1166889911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6240081.

The product of its digits is 186624, while the sum is 50.

The square root of 1166889911 is about 34159.7703592984. The cubic root of 1166889911 is about 1052.7937425406.

The spelling of 1166889911 in words is "one billion, one hundred sixty-six million, eight hundred eighty-nine thousand, nine hundred eleven".