159726961 has 4 divisors (see below), whose sum is σ = 160430832. Its totient is φ = 159023092.

The previous prime is 159726953. The next prime is 159726971. The reversal of 159726961 is 169627951.

159726961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 169627951 = 181 ⋅937171.

It is a cyclic number.

It is not a de Polignac number, because 159726961 - 2³ = 159726953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159726971) 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, 351595 + ... + 352048.

It is an arithmetic number, because the mean of its divisors is an integer number (40107708).

Almost surely, 2^159726961 is an apocalyptic number.

It is an amenable number.

159726961 is a deficient number, since it is larger than the sum of its proper divisors (703871).

159726961 is an equidigital number, since it uses as much as digits as its factorization.

159726961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703870.

The product of its digits is 204120, while the sum is 46.

The square root of 159726961 is about 12638.3132181474. The cubic root of 159726961 is about 542.5745383788.

The spelling of 159726961 in words is "one hundred fifty-nine million, seven hundred twenty-six thousand, nine hundred sixty-one".