158168313 has 6 divisors (see below), whose sum is σ = 228465354. Its totient is φ = 105445536.

The previous prime is 158168299. The next prime is 158168327. The reversal of 158168313 is 313861851.

158168313 is a `hidden beast` number, since 1 + 581 + 68 + 3 + 13 = 666.

It is an interprime number because it is at equal distance from previous prime (158168299) and next prime (158168327).

It can be written as a sum of positive squares in only one way, i.e., 109056249 + 49112064 = 10443^2 + 7008^2 .

It is not a de Polignac number, because 158168313 - 2⁶ = 158168249 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (158168393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8787120 + ... + 8787137.

It is an arithmetic number, because the mean of its divisors is an integer number (38077559).

Almost surely, 2^158168313 is an apocalyptic number.

It is an amenable number.

158168313 is a deficient number, since it is larger than the sum of its proper divisors (70297041).

158168313 is a wasteful number, since it uses less digits than its factorization.

158168313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17574263 (or 17574260 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 158168313 is about 12576.4984395499. The cubic root of 158168313 is about 540.8039157590.

The spelling of 158168313 in words is "one hundred fifty-eight million, one hundred sixty-eight thousand, three hundred thirteen".