3821653216 has 48 divisors (see below), whose sum is σ = 7807218048. Its totient is φ = 1839513600.

The previous prime is 3821653201. The next prime is 3821653249. The reversal of 3821653216 is 6123561283.

3821653216 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181476 + ... + 201436.

It is an arithmetic number, because the mean of its divisors is an integer number (162650376).

Almost surely, 2^3821653216 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 3821653216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3903609024).

3821653216 is an abundant number, since it is smaller than the sum of its proper divisors (3985564832).

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

3821653216 is a wasteful number, since it uses less digits than its factorization.

3821653216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20195 (or 20187 counting only the distinct ones).

The product of its digits is 51840, while the sum is 37.

The square root of 3821653216 is about 61819.5213181079. The cubic root of 3821653216 is about 1563.4491424168.

The spelling of 3821653216 in words is "three billion, eight hundred twenty-one million, six hundred fifty-three thousand, two hundred sixteen".