158389689 has 16 divisors (see below), whose sum is σ = 215352000. Its totient is φ = 103520256.

The previous prime is 158389687. The next prime is 158389691. The reversal of 158389689 is 986983851.

It is an interprime number because it is at equal distance from previous prime (158389687) and next prime (158389691).

It is not a de Polignac number, because 158389689 - 2¹ = 158389687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (158389687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78477 + ... + 80469.

It is an arithmetic number, because the mean of its divisors is an integer number (13459500).

Almost surely, 2^158389689 is an apocalyptic number.

It is an amenable number.

158389689 is a deficient number, since it is larger than the sum of its proper divisors (56962311).

158389689 is a wasteful number, since it uses less digits than its factorization.

158389689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2504.

The product of its digits is 3732480, while the sum is 57.

The square root of 158389689 is about 12585.2965400105. The cubic root of 158389689 is about 541.0561053285.

The spelling of 158389689 in words is "one hundred fifty-eight million, three hundred eighty-nine thousand, six hundred eighty-nine".