158986881 has 21 divisors (see below), whose sum is σ = 238882801. Its totient is φ = 105764292.

The previous prime is 158986847. The next prime is 158986897. The reversal of 158986881 is 188689851.

The square root of 158986881 is 12609.

It is a perfect power (a square), and thus also a powerful number.

158986881 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 158986881 - 2⁷ = 158986753 is a prime.

It is a super-2 number, since 2×158986881² = 50553656660216322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (158986811) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 340210 + ... + 340676.

Almost surely, 2^158986881 is an apocalyptic number.

158986881 is the 12609-th square number.

158986881 is the 6305-th centered octagonal number.

It is an amenable number.

158986881 is a deficient number, since it is larger than the sum of its proper divisors (79895920).

158986881 is an frugal number, since it uses more digits than its factorization.

158986881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 952 (or 470 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 54.

The cubic root of 158986881 is about 541.7352512551.

The spelling of 158986881 in words is "one hundred fifty-eight million, nine hundred eighty-six thousand, eight hundred eighty-one".