158346139 has 12 divisors (see below), whose sum is σ = 184468816. Its totient is φ = 133147872.

The previous prime is 158346137. The next prime is 158346161. The reversal of 158346139 is 931643851.

158346139 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 158346139 - 2¹ = 158346137 is a prime.

It is a super-3 number, since 3×158346139³ (a number of 26 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (158346131) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15637 + ... + 23689.

Almost surely, 2^158346139 is an apocalyptic number.

158346139 is a deficient number, since it is larger than the sum of its proper divisors (26122677).

158346139 is an frugal number, since it uses more digits than its factorization.

158346139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8166 (or 8113 counting only the distinct ones).

The product of its digits is 77760, while the sum is 40.

The square root of 158346139 is about 12583.5662274254. The cubic root of 158346139 is about 541.0065121312.

The spelling of 158346139 in words is "one hundred fifty-eight million, three hundred forty-six thousand, one hundred thirty-nine".