3782847780 has 72 divisors (see below), whose sum is σ = 11754530424. Its totient is φ = 984153600.

The previous prime is 3782847737. The next prime is 3782847787. The reversal of 3782847780 is 877482873.

It is a happy number.

3782847780 is a `hidden beast` number, since 3 + 78 + 28 + 477 + 80 = 666.

3782847780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 98843364 + 3684004416 = 9942^2 + 60696^2 .

It is not an unprimeable number, because it can be changed into a prime (3782847787) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 248911 + ... + 263670.

It is an arithmetic number, because the mean of its divisors is an integer number (163257367).

Almost surely, 2^3782847780 is an apocalyptic number.

3782847780 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3782847780 is an abundant number, since it is smaller than the sum of its proper divisors (7971682644).

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

3782847780 is a wasteful number, since it uses less digits than its factorization.

3782847780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512637 (or 512632 counting only the distinct ones).

The product of its (nonzero) digits is 4214784, while the sum is 54.

The square root of 3782847780 is about 61504.8598079859. The cubic root of 3782847780 is about 1558.1393249726.

The spelling of 3782847780 in words is "three billion, seven hundred eighty-two million, eight hundred forty-seven thousand, seven hundred eighty".