3871381481758 has 24 divisors (see below), whose sum is σ = 6808355949312. Its totient is φ = 1646099207424.

The previous prime is 3871381481749. The next prime is 3871381481791. The reversal of 3871381481758 is 8571841831783.

It is a self number, because there is not a number n which added to its sum of digits gives 3871381481758.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 155514691 + ... + 155539582.

It is an arithmetic number, because the mean of its divisors is an integer number (283681497888).

Almost surely, 2^{3871381481758} is an apocalyptic number.

3871381481758 is a deficient number, since it is larger than the sum of its proper divisors (2936974467554).

3871381481758 is a wasteful number, since it uses less digits than its factorization.

3871381481758 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311054416 (or 311054409 counting only the distinct ones).

The product of its digits is 36126720, while the sum is 64.

The spelling of 3871381481758 in words is "three trillion, eight hundred seventy-one billion, three hundred eighty-one million, four hundred eighty-one thousand, seven hundred fifty-eight".