158668159 has 8 divisors (see below), whose sum is σ = 172387152. Its totient is φ = 145165440.

The previous prime is 158668141. The next prime is 158668189. The reversal of 158668159 is 951866851.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 158668159 - 2¹¹ = 158666111 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 (158668109) 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 in 7 ways as a sum of consecutive naturals, for example, 52537 + ... + 55474.

It is an arithmetic number, because the mean of its divisors is an integer number (21548394).

Almost surely, 2^158668159 is an apocalyptic number.

158668159 is a deficient number, since it is larger than the sum of its proper divisors (13718993).

158668159 is a wasteful number, since it uses less digits than its factorization.

158668159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108137.

The product of its digits is 518400, while the sum is 49.

The square root of 158668159 is about 12596.3549886465. The cubic root of 158668159 is about 541.3730023915.

It can be divided in two parts, 15866 and 8159, that added together give a square (24025 = 155²).

The spelling of 158668159 in words is "one hundred fifty-eight million, six hundred sixty-eight thousand, one hundred fifty-nine".