116165891 has 2 divisors, whose sum is σ = 116165892. Its totient is φ = 116165890.

The previous prime is 116165831. The next prime is 116165923. The reversal of 116165891 is 198561611.

It is a strong prime.

It is an emirp because it is prime and its reverse (198561611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 116165891 - 2⁶ = 116165827 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (116165831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58082945 + 58082946.

It is an arithmetic number, because the mean of its divisors is an integer number (58082946).

Almost surely, 2^116165891 is an apocalyptic number.

116165891 is a deficient number, since it is larger than the sum of its proper divisors (1).

116165891 is an equidigital number, since it uses as much as digits as its factorization.

116165891 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 38.

The square root of 116165891 is about 10778.0281591764. The cubic root of 116165891 is about 487.9322710694.

The spelling of 116165891 in words is "one hundred sixteen million, one hundred sixty-five thousand, eight hundred ninety-one".