159239161 has 3 divisors (see below), whose sum is σ = 159251781. Its totient is φ = 159226542.

The previous prime is 159239159. The next prime is 159239233. The reversal of 159239161 is 161932951.

It is a happy number.

The square root of 159239161 is 12619.

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

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 161932951 = 1459 ⋅110989.

It is not a de Polignac number, because 159239161 - 2¹ = 159239159 is a prime.

It is a super-2 number, since 2×159239161² = 50714220791967842, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 159239161.

It is not an unprimeable number, because it can be changed into a prime (159233161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 6310 + ... + 18928.

It is an arithmetic number, because the mean of its divisors is an integer number (53083927).

Almost surely, 2^159239161 is an apocalyptic number.

159239161 is the 12619-th square number.

159239161 is the 6310-th centered octagonal number.

It is an amenable number.

159239161 is a deficient number, since it is larger than the sum of its proper divisors (12620).

159239161 is an frugal number, since it uses more digits than its factorization.

159239161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25238 (or 12619 counting only the distinct ones).

The product of its digits is 14580, while the sum is 37.

The cubic root of 159239161 is about 542.0216412250.

The spelling of 159239161 in words is "one hundred fifty-nine million, two hundred thirty-nine thousand, one hundred sixty-one".