2865004871 has 4 divisors (see below), whose sum is σ = 2882581752. Its totient is φ = 2847427992.

The previous prime is 2865004829. The next prime is 2865004921. The reversal of 2865004871 is 1784005682.

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

It is a cyclic number.

It is not a de Polignac number, because 2865004871 - 2¹⁰ = 2865003847 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 (2865024871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8788196 + ... + 8788521.

It is an arithmetic number, because the mean of its divisors is an integer number (720645438).

Almost surely, 2^2865004871 is an apocalyptic number.

2865004871 is a deficient number, since it is larger than the sum of its proper divisors (17576881).

2865004871 is a wasteful number, since it uses less digits than its factorization.

2865004871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17576880.

The product of its (nonzero) digits is 107520, while the sum is 41.

The square root of 2865004871 is about 53525.7402657824. The cubic root of 2865004871 is about 1420.2837611519.

The spelling of 2865004871 in words is "two billion, eight hundred sixty-five million, four thousand, eight hundred seventy-one".