158410138 has 4 divisors (see below), whose sum is σ = 237615210. Its totient is φ = 79205068.

The previous prime is 158410129. The next prime is 158410139. The reversal of 158410138 is 831014851.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 134722449 + 23687689 = 11607^2 + 4867^2 .

It is not an unprimeable number, because it can be changed into a prime (158410139) 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 as a sum of consecutive naturals, namely, 39602533 + ... + 39602536.

Almost surely, 2^158410138 is an apocalyptic number.

158410138 is a deficient number, since it is larger than the sum of its proper divisors (79205072).

158410138 is an equidigital number, since it uses as much as digits as its factorization.

158410138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79205071.

The product of its (nonzero) digits is 3840, while the sum is 31.

The square root of 158410138 is about 12586.1089300864. The cubic root of 158410138 is about 541.0793887889.

Adding to 158410138 its reverse (831014851), we get a palindrome (989424989).

The spelling of 158410138 in words is "one hundred fifty-eight million, four hundred ten thousand, one hundred thirty-eight".