159165161 has 2 divisors, whose sum is σ = 159165162. Its totient is φ = 159165160.

The previous prime is 159165151. The next prime is 159165211. The reversal of 159165161 is 161561951.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 158281561 + 883600 = 12581^2 + 940^2 .

It is an emirp because it is prime and its reverse (161561951) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 159165161 - 2²⁶ = 92056297 is a prime.

It is not a weakly prime, because it can be changed into another prime (159165151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79582580 + 79582581.

It is an arithmetic number, because the mean of its divisors is an integer number (79582581).

Almost surely, 2^159165161 is an apocalyptic number.

It is an amenable number.

159165161 is a deficient number, since it is larger than the sum of its proper divisors (1).

159165161 is an equidigital number, since it uses as much as digits as its factorization.

159165161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8100, while the sum is 35.

The square root of 159165161 is about 12616.0675727423. The cubic root of 159165161 is about 541.9376672915.

The spelling of 159165161 in words is "one hundred fifty-nine million, one hundred sixty-five thousand, one hundred sixty-one".