2857827949 has 2 divisors, whose sum is σ = 2857827950. Its totient is φ = 2857827948.

The previous prime is 2857827937. The next prime is 2857827991. The reversal of 2857827949 is 9497287582.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2803702500 + 54125449 = 52950^2 + 7357^2 .

It is a cyclic number.

It is not a de Polignac number, because 2857827949 - 2⁹ = 2857827437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2857827919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1428913974 + 1428913975.

It is an arithmetic number, because the mean of its divisors is an integer number (1428913975).

Almost surely, 2^2857827949 is an apocalyptic number.

It is an amenable number.

2857827949 is a deficient number, since it is larger than the sum of its proper divisors (1).

2857827949 is an equidigital number, since it uses as much as digits as its factorization.

2857827949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20321280, while the sum is 61.

The square root of 2857827949 is about 53458.6564458928. The cubic root of 2857827949 is about 1419.0968185377.

The spelling of 2857827949 in words is "two billion, eight hundred fifty-seven million, eight hundred twenty-seven thousand, nine hundred forty-nine".