158789071 has 4 divisors (see below), whose sum is σ = 181473232. Its totient is φ = 136104912.

The previous prime is 158789053. The next prime is 158789087. The reversal of 158789071 is 170987851.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 158789071 - 2¹¹ = 158787023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158789011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11342070 + ... + 11342083.

It is an arithmetic number, because the mean of its divisors is an integer number (45368308).

Almost surely, 2^158789071 is an apocalyptic number.

158789071 is a deficient number, since it is larger than the sum of its proper divisors (22684161).

158789071 is an equidigital number, since it uses as much as digits as its factorization.

158789071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22684160.

The product of its (nonzero) digits is 141120, while the sum is 46.

The square root of 158789071 is about 12601.1535583057. The cubic root of 158789071 is about 541.5104840230.

The spelling of 158789071 in words is "one hundred fifty-eight million, seven hundred eighty-nine thousand, seventy-one".