20000159 has 2 divisors, whose sum is σ = 20000160. Its totient is φ = 20000158.

The previous prime is 20000153. The next prime is 20000161. The reversal of 20000159 is 95100002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20000159 is a prime.

Together with 20000161, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20000153) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10000079 + 10000080.

It is an arithmetic number, because the mean of its divisors is an integer number (10000080).

Almost surely, 2^20000159 is an apocalyptic number.

20000159 is a deficient number, since it is larger than the sum of its proper divisors (1).

20000159 is an equidigital number, since it uses as much as digits as its factorization.

20000159 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90, while the sum is 17.

The square root of 20000159 is about 4472.1537317047. The cubic root of 20000159 is about 271.4424809783.

The spelling of 20000159 in words is "twenty million, one hundred fifty-nine", and thus it is an aban number.