3871788378 has 16 divisors (see below), whose sum is σ = 7746562656. Its totient is φ = 1290098480.

The previous prime is 3871788353. The next prime is 3871788379. The reversal of 3871788378 is 8738871783.

It is not an unprimeable number, because it can be changed into a prime (3871788379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107376 + ... + 138827.

It is an arithmetic number, because the mean of its divisors is an integer number (484160166).

Almost surely, 2^3871788378 is an apocalyptic number.

3871788378 is an abundant number, since it is smaller than the sum of its proper divisors (3874774278).

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

3871788378 is a wasteful number, since it uses less digits than its factorization.

3871788378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248829.

The product of its digits is 12644352, while the sum is 60.

The square root of 3871788378 is about 62223.6962740080. The cubic root of 3871788378 is about 1570.2562739053.

The spelling of 3871788378 in words is "three billion, eight hundred seventy-one million, seven hundred eighty-eight thousand, three hundred seventy-eight".