3861821882380 has 48 divisors (see below), whose sum is σ = 10110951841536. Its totient is φ = 1203684742080.

The previous prime is 3861821882371. The next prime is 3861821882431. The reversal of 3861821882380 is 832881281683.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1253836734 + ... + 1253839813.

It is an arithmetic number, because the mean of its divisors is an integer number (210644830032).

Almost surely, 2^{3861821882380} is an apocalyptic number.

It is an amenable number.

3861821882380 is an abundant number, since it is smaller than the sum of its proper divisors (6249129959156).

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

3861821882380 is a wasteful number, since it uses less digits than its factorization.

3861821882380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2507676574 (or 2507676572 counting only the distinct ones).

The product of its (nonzero) digits is 7077888, while the sum is 58.

The spelling of 3861821882380 in words is "three trillion, eight hundred sixty-one billion, eight hundred twenty-one million, eight hundred eighty-two thousand, three hundred eighty".