2872871669 has 2 divisors, whose sum is σ = 2872871670. Its totient is φ = 2872871668.

The previous prime is 2872871657. The next prime is 2872871693. The reversal of 2872871669 is 9661782782.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2627792644 + 245079025 = 51262^2 + 15655^2 .

It is a cyclic number.

It is not a de Polignac number, because 2872871669 - 2⁴ = 2872871653 is a prime.

It is a super-2 number, since 2×2872871669² = 16506783253085691122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2872871609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1436435834 + 1436435835.

It is an arithmetic number, because the mean of its divisors is an integer number (1436435835).

Almost surely, 2^2872871669 is an apocalyptic number.

It is an amenable number.

2872871669 is a deficient number, since it is larger than the sum of its proper divisors (1).

2872871669 is an equidigital number, since it uses as much as digits as its factorization.

2872871669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4064256, while the sum is 56.

The square root of 2872871669 is about 53599.1760104575. The cubic root of 2872871669 is about 1421.5825227114.

The spelling of 2872871669 in words is "two billion, eight hundred seventy-two million, eight hundred seventy-one thousand, six hundred sixty-nine".