3780755616 has 48 divisors (see below), whose sum is σ = 10826712288. Its totient is φ = 1145683200.

The previous prime is 3780755611. The next prime is 3780755639. The reversal of 3780755616 is 6165570873.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×3780755616² = 28588226055831078912, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (3780755611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1789075 + ... + 1791186.

It is an arithmetic number, because the mean of its divisors is an integer number (225556506).

Almost surely, 2^3780755616 is an apocalyptic number.

It is an amenable number.

3780755616 is an abundant number, since it is smaller than the sum of its proper divisors (7045956672).

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

3780755616 is a wasteful number, since it uses less digits than its factorization.

3780755616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3580285 (or 3580277 counting only the distinct ones).

The product of its (nonzero) digits is 1058400, while the sum is 48.

The square root of 3780755616 is about 61487.8493362713. The cubic root of 3780755616 is about 1557.8520207727.

The spelling of 3780755616 in words is "three billion, seven hundred eighty million, seven hundred fifty-five thousand, six hundred sixteen".