3821020100 has 72 divisors (see below), whose sum is σ = 8510371968. Its totient is φ = 1488412800.

The previous prime is 3821020069. The next prime is 3821020109. The reversal of 3821020100 is 10201283.

It is not an unprimeable number, because it can be changed into a prime (3821020109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 989774 + ... + 993626.

Almost surely, 2^3821020100 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 3821020100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4255185984).

3821020100 is an abundant number, since it is smaller than the sum of its proper divisors (4689351868).

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

3821020100 is a wasteful number, since it uses less digits than its factorization.

3821020100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4125 (or 4118 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 3821020100 is about 61814.4004257908. The cubic root of 3821020100 is about 1563.3628011331.

Adding to 3821020100 its reverse (10201283), we get a palindrome (3831221383).

The spelling of 3821020100 in words is "three billion, eight hundred twenty-one million, twenty thousand, one hundred".