158987329 has 2 divisors, whose sum is σ = 158987330. Its totient is φ = 158987328.

The previous prime is 158987327. The next prime is 158987347. The reversal of 158987329 is 923789851.

158987329 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143400625 + 15586704 = 11975^2 + 3948^2 .

It is a cyclic number.

It is not a de Polignac number, because 158987329 - 2¹ = 158987327 is a prime.

Together with 158987327, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (158987327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79493664 + 79493665.

It is an arithmetic number, because the mean of its divisors is an integer number (79493665).

Almost surely, 2^158987329 is an apocalyptic number.

It is an amenable number.

158987329 is a deficient number, since it is larger than the sum of its proper divisors (1).

158987329 is an equidigital number, since it uses as much as digits as its factorization.

158987329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1088640, while the sum is 52.

The square root of 158987329 is about 12609.0177650759. The cubic root of 158987329 is about 541.7357600962.

The spelling of 158987329 in words is "one hundred fifty-eight million, nine hundred eighty-seven thousand, three hundred twenty-nine".