3777981872 has 20 divisors (see below), whose sum is σ = 8365531536. Its totient is φ = 1619135040.

The previous prime is 3777981847. The next prime is 3777981877. The reversal of 3777981872 is 2781897773.

It is not an unprimeable number, because it can be changed into a prime (3777981877) 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 3 ways as a sum of consecutive naturals, for example, 16865879 + ... + 16866102.

Almost surely, 2^3777981872 is an apocalyptic number.

It is an amenable number.

3777981872 is an abundant number, since it is smaller than the sum of its proper divisors (4587549664).

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

3777981872 is a wasteful number, since it uses less digits than its factorization.

3777981872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33731996 (or 33731990 counting only the distinct ones).

The product of its digits is 8297856, while the sum is 59.

The square root of 3777981872 is about 61465.2899773523. The cubic root of 3777981872 is about 1557.4709558672.

The spelling of 3777981872 in words is "three billion, seven hundred seventy-seven million, nine hundred eighty-one thousand, eight hundred seventy-two".