3778180648 has 32 divisors (see below), whose sum is σ = 7740457920. Its totient is φ = 1714608000.

The previous prime is 3778180643. The next prime is 3778180669. The reversal of 3778180648 is 8460818773.

It is a junction number, because it is equal to n+sod(n) for n = 3778180595 and 3778180604.

It is not an unprimeable number, because it can be changed into a prime (3778180643) 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, 21508 + ... + 89548.

It is an arithmetic number, because the mean of its divisors is an integer number (241889310).

Almost surely, 2^3778180648 is an apocalyptic number.

It is an amenable number.

3778180648 is an abundant number, since it is smaller than the sum of its proper divisors (3962277272).

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

3778180648 is a wasteful number, since it uses less digits than its factorization.

3778180648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68689 (or 68685 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 52.

The square root of 3778180648 is about 61466.9069337314. The cubic root of 3778180648 is about 1557.4982704872.

The spelling of 3778180648 in words is "three billion, seven hundred seventy-eight million, one hundred eighty thousand, six hundred forty-eight".