3945789740808 has 24 divisors (see below), whose sum is σ = 10686513881550. Its totient is φ = 1315263246912.

The previous prime is 3945789740747. The next prime is 3945789740831. The reversal of 3945789740808 is 8080479875493.

3945789740808 is a `hidden beast` number, since 3 + 9 + 4 + 578 + 9 + 7 + 40 + 8 + 0 + 8 = 666.

3945789740808 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 only one way, i.e., 3874606433604 + 71183307204 = 1968402^2 + 266802^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (72), and also a Moran number because the ratio is a prime number: 54802635289 = 3945789740808 / (3 + 9 + 4 + 5 + 7 + 8 + 9 + 7 + 4 + 0 + 8 + 0 + 8).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27401317573 + ... + 27401317716.

Almost surely, 2^{3945789740808} is an apocalyptic number.

It is an amenable number.

3945789740808 is an abundant number, since it is smaller than the sum of its proper divisors (6740724140742).

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

3945789740808 is a wasteful number, since it uses less digits than its factorization.

3945789740808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54802635301 (or 54802635294 counting only the distinct ones).

The product of its (nonzero) digits is 487710720, while the sum is 72.

The spelling of 3945789740808 in words is "three trillion, nine hundred forty-five billion, seven hundred eighty-nine million, seven hundred forty thousand, eight hundred eight".