158439137 has 2 divisors, whose sum is σ = 158439138. Its totient is φ = 158439136.

The previous prime is 158439107. The next prime is 158439173. The reversal of 158439137 is 731934851.

158439137 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

Together with next prime (158439173) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155850256 + 2588881 = 12484^2 + 1609^2 .

It is a cyclic number.

It is not a de Polignac number, because 158439137 - 2¹⁴ = 158422753 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 158439094 and 158439103.

It is not a weakly prime, because it can be changed into another prime (158439107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79219568 + 79219569.

It is an arithmetic number, because the mean of its divisors is an integer number (79219569).

Almost surely, 2^158439137 is an apocalyptic number.

It is an amenable number.

158439137 is a deficient number, since it is larger than the sum of its proper divisors (1).

158439137 is an equidigital number, since it uses as much as digits as its factorization.

158439137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 41.

The square root of 158439137 is about 12587.2609014035. The cubic root of 158439137 is about 541.1124039398.

The spelling of 158439137 in words is "one hundred fifty-eight million, four hundred thirty-nine thousand, one hundred thirty-seven".