158442529169 has 2 divisors, whose sum is σ = 158442529170. Its totient is φ = 158442529168.

The previous prime is 158442529163. The next prime is 158442529307. The reversal of 158442529169 is 961925244851.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 153111777025 + 5330752144 = 391295^2 + 73012^2 .

It is an emirp because it is prime and its reverse (961925244851) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 158442529169 - 2¹⁶ = 158442463633 is a prime.

It is a super-2 number, since 2×158442529169² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (158442529163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79221264584 + 79221264585.

It is an arithmetic number, because the mean of its divisors is an integer number (79221264585).

Almost surely, 2^158442529169 is an apocalyptic number.

It is an amenable number.

158442529169 is a deficient number, since it is larger than the sum of its proper divisors (1).

158442529169 is an equidigital number, since it uses as much as digits as its factorization.

158442529169 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6220800, while the sum is 56.

The spelling of 158442529169 in words is "one hundred fifty-eight billion, four hundred forty-two million, five hundred twenty-nine thousand, one hundred sixty-nine".