3855142764 has 108 divisors (see below), whose sum is σ = 11057300800. Its totient is φ = 1130500800.

The previous prime is 3855142757. The next prime is 3855142783. The reversal of 3855142764 is 4672415583.

3855142764 is a `hidden beast` number, since 38 + 551 + 4 + 2 + 7 + 64 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 120762 + ... + 149310.

Almost surely, 2^3855142764 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3855142764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5528650400).

3855142764 is an abundant number, since it is smaller than the sum of its proper divisors (7202158036).

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

3855142764 is a wasteful number, since it uses less digits than its factorization.

3855142764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28612 (or 28596 counting only the distinct ones).

The product of its digits is 806400, while the sum is 45.

The square root of 3855142764 is about 62089.7959732515. The cubic root of 3855142764 is about 1568.0027565506.

The spelling of 3855142764 in words is "three billion, eight hundred fifty-five million, one hundred forty-two thousand, seven hundred sixty-four".