2857881997 has 8 divisors (see below), whose sum is σ = 3012883776. Its totient is φ = 2705442432.

The previous prime is 2857881991. The next prime is 2857882031. The reversal of 2857881997 is 7991887582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2857881997 - 2¹⁵ = 2857849229 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2857881991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 638263 + ... + 642724.

It is an arithmetic number, because the mean of its divisors is an integer number (376610472).

Almost surely, 2^2857881997 is an apocalyptic number.

It is an amenable number.

2857881997 is a deficient number, since it is larger than the sum of its proper divisors (155001779).

2857881997 is a wasteful number, since it uses less digits than its factorization.

2857881997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1281107.

The product of its digits is 20321280, while the sum is 64.

The square root of 2857881997 is about 53459.1619556461. The cubic root of 2857881997 is about 1419.1057645931.

The spelling of 2857881997 in words is "two billion, eight hundred fifty-seven million, eight hundred eighty-one thousand, nine hundred ninety-seven".