3781409728 has 14 divisors (see below), whose sum is σ = 7503735056. Its totient is φ = 1890704832.

The previous prime is 3781409711. The next prime is 3781409771. The reversal of 3781409728 is 8279041873.

3781409728 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 as a sum of consecutive naturals, namely, 29542200 + ... + 29542327.

Almost surely, 2^3781409728 is an apocalyptic number.

It is an amenable number.

3781409728 is a deficient number, since it is larger than the sum of its proper divisors (3722325328).

3781409728 is an equidigital number, since it uses as much as digits as its factorization.

3781409728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59084539 (or 59084529 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 49.

The square root of 3781409728 is about 61493.1681408594. The cubic root of 3781409728 is about 1557.9418573947.

The spelling of 3781409728 in words is "three billion, seven hundred eighty-one million, four hundred nine thousand, seven hundred twenty-eight".