3855381760 has 36 divisors (see below), whose sum is σ = 9234847188. Its totient is φ = 1542152192.

The previous prime is 3855381707. The next prime is 3855381769. The reversal of 3855381760 is 671835583.

It can be written as a sum of positive squares in 2 ways, for example, as 2651014144 + 1204367616 = 51488^2 + 34704^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 3855381760.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3855381769) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1504729 + ... + 1507288.

It is an arithmetic number, because the mean of its divisors is an integer number (256523533).

Almost surely, 2^3855381760 is an apocalyptic number.

It is an amenable number.

3855381760 is an abundant number, since it is smaller than the sum of its proper divisors (5379465428).

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

3855381760 is an equidigital number, since it uses as much as digits as its factorization.

3855381760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3012038 (or 3012024 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 46.

The square root of 3855381760 is about 62091.7205430805. The cubic root of 3855381760 is about 1568.0351581732.

The spelling of 3855381760 in words is "three billion, eight hundred fifty-five million, three hundred eighty-one thousand, seven hundred sixty".