2871091065 has 32 divisors (see below), whose sum is σ = 4642957440. Its totient is φ = 1514889216.

The previous prime is 2871091061. The next prime is 2871091073. The reversal of 2871091065 is 5601901782.

It is not a de Polignac number, because 2871091065 - 2² = 2871091061 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (2871091061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1884394 + ... + 1885916.

It is an arithmetic number, because the mean of its divisors is an integer number (145092420).

Almost surely, 2^2871091065 is an apocalyptic number.

It is an amenable number.

2871091065 is a deficient number, since it is larger than the sum of its proper divisors (1771866375).

2871091065 is a wasteful number, since it uses less digits than its factorization.

2871091065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2793.

The product of its (nonzero) digits is 30240, while the sum is 39.

The square root of 2871091065 is about 53582.5630685954. The cubic root of 2871091065 is about 1421.2887633701.

The spelling of 2871091065 in words is "two billion, eight hundred seventy-one million, ninety-one thousand, sixty-five".