3854521836 has 96 divisors (see below), whose sum is σ = 10954056960. Its totient is φ = 1162425600.

The previous prime is 3854521819. The next prime is 3854521873. The reversal of 3854521836 is 6381254583.

3854521836 is a `hidden beast` number, since 3 + 8 + 545 + 21 + 83 + 6 = 666.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 3854521791 and 3854521800.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 242980 + ... + 258356.

It is an arithmetic number, because the mean of its divisors is an integer number (114104760).

Almost surely, 2^3854521836 is an apocalyptic number.

3854521836 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3854521836, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5477028480).

3854521836 is an abundant number, since it is smaller than the sum of its proper divisors (7099535124).

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

3854521836 is a wasteful number, since it uses less digits than its factorization.

3854521836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15612 (or 15604 counting only the distinct ones).

The product of its digits is 691200, while the sum is 45.

The square root of 3854521836 is about 62084.7955299846. The cubic root of 3854521836 is about 1567.9185686530.

The spelling of 3854521836 in words is "three billion, eight hundred fifty-four million, five hundred twenty-one thousand, eight hundred thirty-six".