158163273 has 20 divisors (see below), whose sum is σ = 238620228. Its totient is φ = 104392800.

The previous prime is 158163263. The next prime is 158163283. The reversal of 158163273 is 372361851.

158163273 is a `hidden beast` number, since 1 + 581 + 6 + 3 + 2 + 73 = 666.

It is an interprime number because it is at equal distance from previous prime (158163263) and next prime (158163283).

It can be written as a sum of positive squares in 2 ways, for example, as 150479289 + 7683984 = 12267^2 + 2772^2 .

It is not a de Polignac number, because 158163273 - 2⁵ = 158163241 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (158163233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1486 + ... + 17847.

Almost surely, 2^158163273 is an apocalyptic number.

It is an amenable number.

158163273 is a deficient number, since it is larger than the sum of its proper divisors (80456955).

158163273 is a wasteful number, since it uses less digits than its factorization.

158163273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19446 (or 19437 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 158163273 is about 12576.2980642159. The cubic root of 158163273 is about 540.7981714970.

The spelling of 158163273 in words is "one hundred fifty-eight million, one hundred sixty-three thousand, two hundred seventy-three".