3721081896 has 256 divisors, whose sum is σ = 12096000000. Its totient is φ = 1038064896.

The previous prime is 3721081891. The next prime is 3721081909. The reversal of 3721081896 is 6981801273.

3721081896 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (3721081891) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 18698805 + ... + 18699003.

It is an arithmetic number, because the mean of its divisors is an integer number (47250000).

Almost surely, 2^3721081896 is an apocalyptic number.

3721081896 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 3721081896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6048000000).

3721081896 is an abundant number, since it is smaller than the sum of its proper divisors (8374918104).

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

3721081896 is a wasteful number, since it uses less digits than its factorization.

3721081896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 453 (or 443 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 3721081896 is about 61000.6712749950. The cubic root of 3721081896 is about 1549.6123756342.

The spelling of 3721081896 in words is "three billion, seven hundred twenty-one million, eighty-one thousand, eight hundred ninety-six".