2857279871 has 2 divisors, whose sum is σ = 2857279872. Its totient is φ = 2857279870.

The previous prime is 2857279861. The next prime is 2857279927. The reversal of 2857279871 is 1789727582.

It is an a-pointer prime, because the next prime (2857279927) can be obtained adding 2857279871 to its sum of digits (56).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2857279871 - 2⁶ = 2857279807 is a prime.

It is a super-2 number, since 2×2857279871² = 16328096522443553282, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2857279861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1428639935 + 1428639936.

It is an arithmetic number, because the mean of its divisors is an integer number (1428639936).

Almost surely, 2^2857279871 is an apocalyptic number.

2857279871 is a deficient number, since it is larger than the sum of its proper divisors (1).

2857279871 is an equidigital number, since it uses as much as digits as its factorization.

2857279871 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3951360, while the sum is 56.

The square root of 2857279871 is about 53453.5300143966. The cubic root of 2857279871 is about 1419.0060939867.

The spelling of 2857279871 in words is "two billion, eight hundred fifty-seven million, two hundred seventy-nine thousand, eight hundred seventy-one".