3855021852 has 48 divisors (see below), whose sum is σ = 10151164800. Its totient is φ = 1127904960.

The previous prime is 3855021851. The next prime is 3855021899. The reversal of 3855021852 is 2581205583.

It is a super-2 number, since 2×3855021852² = 29722386958795019808, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 3855021852.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3855021851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 499702 + ... + 507357.

It is an arithmetic number, because the mean of its divisors is an integer number (211482600).

Almost surely, 2^3855021852 is an apocalyptic number.

It is an amenable number.

3855021852 is an abundant number, since it is smaller than the sum of its proper divisors (6296142948).

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

3855021852 is a wasteful number, since it uses less digits than its factorization.

3855021852 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007106 (or 1007104 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 39.

The square root of 3855021852 is about 62088.8222790544. The cubic root of 3855021852 is about 1567.9863635276.

The spelling of 3855021852 in words is "three billion, eight hundred fifty-five million, twenty-one thousand, eight hundred fifty-two".