3871877218386 has 16 divisors (see below), whose sum is σ = 8151320460000. Its totient is φ = 1222698068928.

The previous prime is 3871877218357. The next prime is 3871877218409. The reversal of 3871877218386 is 6838127781783.

It is a self number, because there is not a number n which added to its sum of digits gives 3871877218386.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16981917511 + ... + 16981917738.

It is an arithmetic number, because the mean of its divisors is an integer number (509457528750).

Almost surely, 2^{3871877218386} is an apocalyptic number.

3871877218386 is an abundant number, since it is smaller than the sum of its proper divisors (4279443241614).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3871877218386 is a wasteful number, since it uses less digits than its factorization.

3871877218386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33963835273.

The product of its digits is 151732224, while the sum is 69.

The spelling of 3871877218386 in words is "three trillion, eight hundred seventy-one billion, eight hundred seventy-seven million, two hundred eighteen thousand, three hundred eighty-six".