3781216608 has 96 divisors (see below), whose sum is σ = 10732684032. Its totient is φ = 1158720000.

The previous prime is 3781216601. The next prime is 3781216609. The reversal of 3781216608 is 8066121873.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 3781216608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3781216601) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 307213 + ... + 319283.

It is an arithmetic number, because the mean of its divisors is an integer number (111798792).

Almost surely, 2^3781216608 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 3781216608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5366342016).

3781216608 is an abundant number, since it is smaller than the sum of its proper divisors (6951467424).

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

3781216608 is a wasteful number, since it uses less digits than its factorization.

3781216608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12348 (or 12340 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 3781216608 is about 61491.5978650742. The cubic root of 3781216608 is about 1557.9153351120.

The spelling of 3781216608 in words is "three billion, seven hundred eighty-one million, two hundred sixteen thousand, six hundred eight".