158238005 has 4 divisors (see below), whose sum is σ = 189885612. Its totient is φ = 126590400.

The previous prime is 158238001. The next prime is 158238029. The reversal of 158238005 is 500832851.

It is a happy number.

158238005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 123498769 + 34739236 = 11113^2 + 5894^2 .

It is not a de Polignac number, because 158238005 - 2² = 158238001 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158238001) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15823796 + ... + 15823805.

It is an arithmetic number, because the mean of its divisors is an integer number (47471403).

Almost surely, 2^158238005 is an apocalyptic number.

It is an amenable number.

158238005 is a deficient number, since it is larger than the sum of its proper divisors (31647607).

158238005 is an equidigital number, since it uses as much as digits as its factorization.

158238005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31647606.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 158238005 is about 12579.2688579265. The cubic root of 158238005 is about 540.8833336304.

The spelling of 158238005 in words is "one hundred fifty-eight million, two hundred thirty-eight thousand, five".