116205191 has 2 divisors, whose sum is σ = 116205192. Its totient is φ = 116205190.

The previous prime is 116205179. The next prime is 116205211. The reversal of 116205191 is 191502611.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-116205191 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 116205191.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (116205491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58102595 + 58102596.

It is an arithmetic number, because the mean of its divisors is an integer number (58102596).

Almost surely, 2^116205191 is an apocalyptic number.

116205191 is a deficient number, since it is larger than the sum of its proper divisors (1).

116205191 is an equidigital number, since it uses as much as digits as its factorization.

116205191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 540, while the sum is 26.

The square root of 116205191 is about 10779.8511585272. The cubic root of 116205191 is about 487.9872888721.

The spelling of 116205191 in words is "one hundred sixteen million, two hundred five thousand, one hundred ninety-one".