3781721088 has 352 divisors, whose sum is σ = 12340953600. Its totient is φ = 1138655232.

The previous prime is 3781721087. The next prime is 3781721113. The reversal of 3781721088 is 8801271873.

3781721088 is a `hidden beast` number, since 378 + 172 + 108 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3781721087) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12082020 + ... + 12082332.

Almost surely, 2^3781721088 is an apocalyptic number.

3781721088 is a gapful number since it is divisible by the number (38) 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 3781721088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6170476800).

3781721088 is an abundant number, since it is smaller than the sum of its proper divisors (8559232512).

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

3781721088 is a wasteful number, since it uses less digits than its factorization.

3781721088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384 (or 360 counting only the distinct ones).

The product of its (nonzero) digits is 150528, while the sum is 45.

The square root of 3781721088 is about 61495.6997520965. The cubic root of 3781721088 is about 1557.9846163567.

The spelling of 3781721088 in words is "three billion, seven hundred eighty-one million, seven hundred twenty-one thousand, eighty-eight".