3785815789840 has 40 divisors (see below), whose sum is σ = 10059453385920. Its totient is φ = 1297993984896.

The previous prime is 3785815789831. The next prime is 3785815789843. The reversal of 3785815789840 is 489875185873.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (3785815789843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3380192110 + ... + 3380193229.

It is an arithmetic number, because the mean of its divisors is an integer number (251486334648).

Almost surely, 2^{3785815789840} is an apocalyptic number.

It is an amenable number.

3785815789840 is an abundant number, since it is smaller than the sum of its proper divisors (6273637596080).

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

3785815789840 is a wasteful number, since it uses less digits than its factorization.

3785815789840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6760385359 (or 6760385353 counting only the distinct ones).

The product of its (nonzero) digits is 541900800, while the sum is 73.

The spelling of 3785815789840 in words is "three trillion, seven hundred eighty-five billion, eight hundred fifteen million, seven hundred eighty-nine thousand, eight hundred forty".