168182117 has 2 divisors, whose sum is σ = 168182118. Its totient is φ = 168182116.

The previous prime is 168182087. The next prime is 168182191. The reversal of 168182117 is 711281861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163047361 + 5134756 = 12769^2 + 2266^2 .

It is an emirp because it is prime and its reverse (711281861) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168182117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168182317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84091058 + 84091059.

It is an arithmetic number, because the mean of its divisors is an integer number (84091059).

Almost surely, 2^168182117 is an apocalyptic number.

It is an amenable number.

168182117 is a deficient number, since it is larger than the sum of its proper divisors (1).

168182117 is an equidigital number, since it uses as much as digits as its factorization.

168182117 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5376, while the sum is 35.

The square root of 168182117 is about 12968.5048097304. The cubic root of 168182117 is about 551.9841470015.

The spelling of 168182117 in words is "one hundred sixty-eight million, one hundred eighty-two thousand, one hundred seventeen".