3977081782 has 32 divisors (see below), whose sum is σ = 6260268960. Its totient is φ = 1893265920.

The previous prime is 3977081741. The next prime is 3977081783. The reversal of 3977081782 is 2871807793.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3977081783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 589444 + ... + 596152.

It is an arithmetic number, because the mean of its divisors is an integer number (195633405).

Almost surely, 2^3977081782 is an apocalyptic number.

3977081782 is a deficient number, since it is larger than the sum of its proper divisors (2283187178).

3977081782 is a wasteful number, since it uses less digits than its factorization.

3977081782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6928.

The product of its (nonzero) digits is 1185408, while the sum is 52.

The square root of 3977081782 is about 63064.1085087231. The cubic root of 3977081782 is about 1584.3635430896.

The spelling of 3977081782 in words is "three billion, nine hundred seventy-seven million, eighty-one thousand, seven hundred eighty-two".