158906393 has 2 divisors, whose sum is σ = 158906394. Its totient is φ = 158906392.

The previous prime is 158906387. The next prime is 158906417. The reversal of 158906393 is 393609851.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152967424 + 5938969 = 12368^2 + 2437^2 .

It is an emirp because it is prime and its reverse (393609851) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 158906393 - 2¹² = 158902297 is a prime.

It is not a weakly prime, because it can be changed into another prime (158906303) 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, 79453196 + 79453197.

It is an arithmetic number, because the mean of its divisors is an integer number (79453197).

Almost surely, 2^158906393 is an apocalyptic number.

It is an amenable number.

158906393 is a deficient number, since it is larger than the sum of its proper divisors (1).

158906393 is an equidigital number, since it uses as much as digits as its factorization.

158906393 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 158906393 is about 12605.8079074687. The cubic root of 158906393 is about 541.6438169875.

The spelling of 158906393 in words is "one hundred fifty-eight million, nine hundred six thousand, three hundred ninety-three".