3813978522 has 8 divisors (see below), whose sum is σ = 7627957056. Its totient is φ = 1271326172.

The previous prime is 3813978521. The next prime is 3813978523. The reversal of 3813978522 is 2258793183.

It is a happy number.

3813978522 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3813978521) and next prime (3813978523).

It is a sphenic number, since it is the product of 3 distinct primes.

3813978522 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (3813978521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317831538 + ... + 317831549.

It is an arithmetic number, because the mean of its divisors is an integer number (953494632).

Almost surely, 2^3813978522 is an apocalyptic number.

3813978522 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

3813978522 is a wasteful number, since it uses less digits than its factorization.

3813978522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635663092.

The product of its digits is 725760, while the sum is 48.

The square root of 3813978522 is about 61757.4167367775. The cubic root of 3813978522 is about 1562.4018613732.

The spelling of 3813978522 in words is "three billion, eight hundred thirteen million, nine hundred seventy-eight thousand, five hundred twenty-two".