3871494817 has 2 divisors, whose sum is σ = 3871494818. Its totient is φ = 3871494816.

The previous prime is 3871494811. The next prime is 3871494833. The reversal of 3871494817 is 7184941783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3859391376 + 12103441 = 62124^2 + 3479^2 .

It is a cyclic number.

It is not a de Polignac number, because 3871494817 - 2¹¹ = 3871492769 is a prime.

It is not a weakly prime, because it can be changed into another prime (3871494811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1935747408 + 1935747409.

It is an arithmetic number, because the mean of its divisors is an integer number (1935747409).

Almost surely, 2^3871494817 is an apocalyptic number.

It is an amenable number.

3871494817 is a deficient number, since it is larger than the sum of its proper divisors (1).

3871494817 is an equidigital number, since it uses as much as digits as its factorization.

3871494817 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1354752, while the sum is 52.

The square root of 3871494817 is about 62221.3373128543. The cubic root of 3871494817 is about 1570.2165870210.

The spelling of 3871494817 in words is "three billion, eight hundred seventy-one million, four hundred ninety-four thousand, eight hundred seventeen".