3878813371 has 2 divisors, whose sum is σ = 3878813372. Its totient is φ = 3878813370.

The previous prime is 3878813369. The next prime is 3878813401. The reversal of 3878813371 is 1733188783.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3878813371 - 2¹ = 3878813369 is a prime.

Together with 3878813369, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (3878813671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1939406685 + 1939406686.

It is an arithmetic number, because the mean of its divisors is an integer number (1939406686).

Almost surely, 2^3878813371 is an apocalyptic number.

3878813371 is a deficient number, since it is larger than the sum of its proper divisors (1).

3878813371 is an equidigital number, since it uses as much as digits as its factorization.

3878813371 is an evil number, because the sum of its binary digits is even.

The product of its digits is 677376, while the sum is 49.

The square root of 3878813371 is about 62280.1201909566. The cubic root of 3878813371 is about 1571.2053938280.

The spelling of 3878813371 in words is "three billion, eight hundred seventy-eight million, eight hundred thirteen thousand, three hundred seventy-one".