159089881 has 4 divisors (see below), whose sum is σ = 162970164. Its totient is φ = 155209600.

The previous prime is 159089867. The next prime is 159089897. The reversal of 159089881 is 188980951.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 188980951 = 137 ⋅1379423.

It can be written as a sum of positive squares in 2 ways, for example, as 56250000 + 102839881 = 7500^2 + 10141^2 .

It is not a de Polignac number, because 159089881 - 2⁷ = 159089753 is a prime.

It is a super-2 number, since 2×159089881² = 50619180473188322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159089851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1940080 + ... + 1940161.

It is an arithmetic number, because the mean of its divisors is an integer number (40742541).

Almost surely, 2^159089881 is an apocalyptic number.

It is an amenable number.

159089881 is a deficient number, since it is larger than the sum of its proper divisors (3880283).

159089881 is an equidigital number, since it uses as much as digits as its factorization.

159089881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3880282.

The product of its (nonzero) digits is 207360, while the sum is 49.

The square root of 159089881 is about 12613.0837228649. The cubic root of 159089881 is about 541.8522141246.

The spelling of 159089881 in words is "one hundred fifty-nine million, eighty-nine thousand, eight hundred eighty-one".