158947881 has 16 divisors (see below), whose sum is σ = 219102720. Its totient is φ = 102389760.

The previous prime is 158947853. The next prime is 158947891. The reversal of 158947881 is 188749851.

It is a happy number.

158947881 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 158947881 - 2¹¹ = 158945833 is a prime.

It is a super-2 number, since 2×158947881² = 50528857748780322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (158947891) 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, 112105 + ... + 113513.

It is an arithmetic number, because the mean of its divisors is an integer number (13693920).

Almost surely, 2^158947881 is an apocalyptic number.

It is an amenable number.

158947881 is a deficient number, since it is larger than the sum of its proper divisors (60154839).

158947881 is a wasteful number, since it uses less digits than its factorization.

158947881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2656.

The product of its digits is 645120, while the sum is 51.

The square root of 158947881 is about 12607.4533907526. The cubic root of 158947881 is about 541.6909511584.

The spelling of 158947881 in words is "one hundred fifty-eight million, nine hundred forty-seven thousand, eight hundred eighty-one".