3781113777 has 56 divisors (see below), whose sum is σ = 6517917504. Its totient is φ = 2147645664.

The previous prime is 3781113751. The next prime is 3781113779. The reversal of 3781113777 is 7773111873.

It is not a de Polignac number, because 3781113777 - 2¹² = 3781109681 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3781113779) 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 55 ways as a sum of consecutive naturals, for example, 880678 + ... + 884960.

It is an arithmetic number, because the mean of its divisors is an integer number (116391384).

Almost surely, 2^3781113777 is an apocalyptic number.

It is an amenable number.

3781113777 is a deficient number, since it is larger than the sum of its proper divisors (2736803727).

3781113777 is an equidigital number, since it uses as much as digits as its factorization.

3781113777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4481 (or 4466 counting only the distinct ones).

The product of its digits is 172872, while the sum is 45.

The square root of 3781113777 is about 61490.7617207658. The cubic root of 3781113777 is about 1557.9012123697.

The spelling of 3781113777 in words is "three billion, seven hundred eighty-one million, one hundred thirteen thousand, seven hundred seventy-seven".