159628081 has 2 divisors, whose sum is σ = 159628082. Its totient is φ = 159628080.

The previous prime is 159628069. The next prime is 159628087. The reversal of 159628081 is 180826951.

159628081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102111025 + 57517056 = 10105^2 + 7584^2 .

It is an emirp because it is prime and its reverse (180826951) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 159628081 - 2¹⁵ = 159595313 is a prime.

It is a super-2 number, since 2×159628081² = 50962248487485122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (159628087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79814040 + 79814041.

It is an arithmetic number, because the mean of its divisors is an integer number (79814041).

Almost surely, 2^159628081 is an apocalyptic number.

It is an amenable number.

159628081 is a deficient number, since it is larger than the sum of its proper divisors (1).

159628081 is an equidigital number, since it uses as much as digits as its factorization.

159628081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34560, while the sum is 40.

The square root of 159628081 is about 12634.4006980941. The cubic root of 159628081 is about 542.4625538510.

The spelling of 159628081 in words is "one hundred fifty-nine million, six hundred twenty-eight thousand, eighty-one".