1166996191 has 2 divisors, whose sum is σ = 1166996192. Its totient is φ = 1166996190.

The previous prime is 1166996153. The next prime is 1166996197. The reversal of 1166996191 is 1916996611.

It is a strong prime.

It is an emirp because it is prime and its reverse (1916996611) is a distict prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 1619669911 and 1199669161.

It is a cyclic number.

It is not a de Polignac number, because 1166996191 - 2²⁷ = 1032778463 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1166996197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 583498095 + 583498096.

It is an arithmetic number, because the mean of its divisors is an integer number (583498096).

Almost surely, 2^1166996191 is an apocalyptic number.

1166996191 is a deficient number, since it is larger than the sum of its proper divisors (1).

1166996191 is an equidigital number, since it uses as much as digits as its factorization.

1166996191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 157464, while the sum is 49.

The square root of 1166996191 is about 34161.3259549450. The cubic root of 1166996191 is about 1052.8257042881.

The spelling of 1166996191 in words is "one billion, one hundred sixty-six million, nine hundred ninety-six thousand, one hundred ninety-one".