5657871181 has 2 divisors, whose sum is σ = 5657871182. Its totient is φ = 5657871180.

The previous prime is 5657871179. The next prime is 5657871187. The reversal of 5657871181 is 1811787565.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4298769225 + 1359101956 = 65565^2 + 36866^2 .

It is a cyclic number.

It is not a de Polignac number, because 5657871181 - 2¹ = 5657871179 is a prime.

It is a super-2 number, since 2×5657871181² = 64023012601580669522, which contains 22 as substring.

Together with 5657871179, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5657871187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2828935590 + 2828935591.

It is an arithmetic number, because the mean of its divisors is an integer number (2828935591).

Almost surely, 2^5657871181 is an apocalyptic number.

It is an amenable number.

5657871181 is a deficient number, since it is larger than the sum of its proper divisors (1).

5657871181 is an equidigital number, since it uses as much as digits as its factorization.

5657871181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 470400, while the sum is 49.

The square root of 5657871181 is about 75218.8219862555. The cubic root of 5657871181 is about 1781.9042010010.

The spelling of 5657871181 in words is "five billion, six hundred fifty-seven million, eight hundred seventy-one thousand, one hundred eighty-one".