2159318171 has 2 divisors, whose sum is σ = 2159318172. Its totient is φ = 2159318170.

The previous prime is 2159318159. The next prime is 2159318191. The reversal of 2159318171 is 1718139512.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2159318171 - 2⁶ = 2159318107 is a prime.

It is a super-2 number, since 2×2159318171² = 9325309927221570482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2159318191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1079659085 + 1079659086.

It is an arithmetic number, because the mean of its divisors is an integer number (1079659086).

Almost surely, 2^2159318171 is an apocalyptic number.

2159318171 is a deficient number, since it is larger than the sum of its proper divisors (1).

2159318171 is an equidigital number, since it uses as much as digits as its factorization.

2159318171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 38.

The square root of 2159318171 is about 46468.4642634120. The cubic root of 2159318171 is about 1292.5247852560.

The spelling of 2159318171 in words is "two billion, one hundred fifty-nine million, three hundred eighteen thousand, one hundred seventy-one".