3781043712 has 400 divisors, whose sum is σ = 12406027392. Its totient is φ = 1141309440.

The previous prime is 3781043689. The next prime is 3781043723. The reversal of 3781043712 is 2173401873.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 21855658 + ... + 21855830.

Almost surely, 2^3781043712 is an apocalyptic number.

3781043712 is a gapful number since it is divisible by the number (32) 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 3781043712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6203013696).

3781043712 is an abundant number, since it is smaller than the sum of its proper divisors (8624983680).

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

3781043712 is a wasteful number, since it uses less digits than its factorization.

3781043712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251 (or 226 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 3781043712 is about 61490.1919983992. The cubic root of 3781043712 is about 1557.8915895417.

The spelling of 3781043712 in words is "three billion, seven hundred eighty-one million, forty-three thousand, seven hundred twelve".