3861823440538 has 8 divisors (see below), whose sum is σ = 6620268755232. Its totient is φ = 1655067188796.

The previous prime is 3861823440523. The next prime is 3861823440547. The reversal of 3861823440538 is 8350443281683.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137922265720 + ... + 137922265747.

It is an arithmetic number, because the mean of its divisors is an integer number (827533594404).

Almost surely, 2^{3861823440538} is an apocalyptic number.

3861823440538 is a deficient number, since it is larger than the sum of its proper divisors (2758445314694).

3861823440538 is a wasteful number, since it uses less digits than its factorization.

3861823440538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275844531476.

The product of its (nonzero) digits is 13271040, while the sum is 55.

The spelling of 3861823440538 in words is "three trillion, eight hundred sixty-one billion, eight hundred twenty-three million, four hundred forty thousand, five hundred thirty-eight".