2857488866 has 4 divisors (see below), whose sum is σ = 4286233302. Its totient is φ = 1428744432.

The previous prime is 2857488863. The next prime is 2857488889. The reversal of 2857488866 is 6688847582.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2226424225 + 631064641 = 47185^2 + 25121^2 .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2857488799 and 2857488808.

It is not an unprimeable number, because it can be changed into a prime (2857488863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 714372215 + ... + 714372218.

Almost surely, 2^2857488866 is an apocalyptic number.

2857488866 is a deficient number, since it is larger than the sum of its proper divisors (1428744436).

2857488866 is a wasteful number, since it uses less digits than its factorization.

2857488866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428744435.

The product of its digits is 41287680, while the sum is 62.

The square root of 2857488866 is about 53455.4849009903. The cubic root of 2857488866 is about 1419.0406907549.

The spelling of 2857488866 in words is "two billion, eight hundred fifty-seven million, four hundred eighty-eight thousand, eight hundred sixty-six".