158978589 has 24 divisors (see below), whose sum is σ = 268998048. Its totient is φ = 82585440.

The previous prime is 158978579. The next prime is 158978591. The reversal of 158978589 is 985879851.

It is not a de Polignac number, because 158978589 - 2⁹ = 158978077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (158978569) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47542 + ... + 50775.

It is an arithmetic number, because the mean of its divisors is an integer number (11208252).

Almost surely, 2^158978589 is an apocalyptic number.

It is an amenable number.

158978589 is a deficient number, since it is larger than the sum of its proper divisors (110019459).

158978589 is a wasteful number, since it uses less digits than its factorization.

158978589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98345 (or 98338 counting only the distinct ones).

The product of its digits is 7257600, while the sum is 60.

The square root of 158978589 is about 12608.6711829598. The cubic root of 158978589 is about 541.7258329795.

The spelling of 158978589 in words is "one hundred fifty-eight million, nine hundred seventy-eight thousand, five hundred eighty-nine".