116166191 has 2 divisors, whose sum is σ = 116166192. Its totient is φ = 116166190.

The previous prime is 116166179. The next prime is 116166217. The reversal of 116166191 is 191661611.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 116166191 - 2¹⁴ = 116149807 is a prime.

It is a super-3 number, since 3×116166191³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (116166101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58083095 + 58083096.

It is an arithmetic number, because the mean of its divisors is an integer number (58083096).

Almost surely, 2^116166191 is an apocalyptic number.

116166191 is a deficient number, since it is larger than the sum of its proper divisors (1).

116166191 is an equidigital number, since it uses as much as digits as its factorization.

116166191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1944, while the sum is 32.

The square root of 116166191 is about 10778.0420763699. The cubic root of 116166191 is about 487.9326910996.

The spelling of 116166191 in words is "one hundred sixteen million, one hundred sixty-six thousand, one hundred ninety-one".