1166386271 has 2 divisors, whose sum is σ = 1166386272. Its totient is φ = 1166386270.

The previous prime is 1166386259. The next prime is 1166386289. The reversal of 1166386271 is 1726836611.

It is a weak prime.

It is an emirp because it is prime and its reverse (1726836611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1166386271 - 2²² = 1162191967 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1166386471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583193135 + 583193136.

It is an arithmetic number, because the mean of its divisors is an integer number (583193136).

Almost surely, 2^1166386271 is an apocalyptic number.

1166386271 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166386271 is an equidigital number, since it uses as much as digits as its factorization.

1166386271 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72576, while the sum is 41.

The square root of 1166386271 is about 34152.3977342734. The cubic root of 1166386271 is about 1052.6422557158.

The spelling of 1166386271 in words is "one billion, one hundred sixty-six million, three hundred eighty-six thousand, two hundred seventy-one".