3854943820 has 192 divisors, whose sum is σ = 10747699200. Its totient is φ = 1127208960.

The previous prime is 3854943797. The next prime is 3854943847. The reversal of 3854943820 is 283494583.

3854943820 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×3854943820³ (a number of 30 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1416421 + ... + 1419139.

It is an arithmetic number, because the mean of its divisors is an integer number (55977600).

Almost surely, 2^3854943820 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 3854943820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5373849600).

3854943820 is an abundant number, since it is smaller than the sum of its proper divisors (6892755380).

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

3854943820 is a wasteful number, since it uses less digits than its factorization.

3854943820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2808 (or 2806 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 46.

The square root of 3854943820 is about 62088.1938857944. The cubic root of 3854943820 is about 1567.9757839129.

It can be divided in two parts, 38549 and 43820, that added together give a square (82369 = 287²).

The spelling of 3854943820 in words is "three billion, eight hundred fifty-four million, nine hundred forty-three thousand, eight hundred twenty".