168378113 has 2 divisors, whose sum is σ = 168378114. Its totient is φ = 168378112.

The previous prime is 168378109. The next prime is 168378127. The reversal of 168378113 is 311873861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 161366209 + 7011904 = 12703^2 + 2648^2 .

It is a cyclic number.

It is not a de Polignac number, because 168378113 - 2² = 168378109 is a prime.

It is not a weakly prime, because it can be changed into another prime (168378313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84189056 + 84189057.

It is an arithmetic number, because the mean of its divisors is an integer number (84189057).

Almost surely, 2^168378113 is an apocalyptic number.

It is an amenable number.

168378113 is a deficient number, since it is larger than the sum of its proper divisors (1).

168378113 is an equidigital number, since it uses as much as digits as its factorization.

168378113 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 38.

The square root of 168378113 is about 12976.0592245874. The cubic root of 168378113 is about 552.1984874395.

The spelling of 168378113 in words is "one hundred sixty-eight million, three hundred seventy-eight thousand, one hundred thirteen".