3974858516871 has 48 divisors (see below), whose sum is σ = 6405141629952. Its totient is φ = 2354829796800.

The previous prime is 3974858516833. The next prime is 3974858516917. The reversal of 3974858516871 is 1786158584793.

3974858516871 is a `hidden beast` number, since 3 + 9 + 7 + 485 + 85 + 1 + 68 + 7 + 1 = 666.

It is not a de Polignac number, because 3974858516871 - 2²⁵ = 3974824962439 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3974858516871.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3974858516801) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24246 + ... + 2819628.

It is an arithmetic number, because the mean of its divisors is an integer number (133440450624).

Almost surely, 2^{3974858516871} is an apocalyptic number.

3974858516871 is a deficient number, since it is larger than the sum of its proper divisors (2430283113081).

3974858516871 is a wasteful number, since it uses less digits than its factorization.

3974858516871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2795724 (or 2795721 counting only the distinct ones).

The product of its digits is 406425600, while the sum is 72.

The spelling of 3974858516871 in words is "three trillion, nine hundred seventy-four billion, eight hundred fifty-eight million, five hundred sixteen thousand, eight hundred seventy-one".