3813997378 has 16 divisors (see below), whose sum is σ = 5810592384. Its totient is φ = 1877174640.

The previous prime is 3813997349. The next prime is 3813997381. The reversal of 3813997378 is 8737993183.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189688 + ... + 208828.

It is an arithmetic number, because the mean of its divisors is an integer number (363162024).

Almost surely, 2^3813997378 is an apocalyptic number.

3813997378 is a deficient number, since it is larger than the sum of its proper divisors (1996595006).

3813997378 is a wasteful number, since it uses less digits than its factorization.

3813997378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20697.

The product of its digits is 6858432, while the sum is 58.

The square root of 3813997378 is about 61757.5693984146. The cubic root of 3813997378 is about 1562.4044361650.

The spelling of 3813997378 in words is "three billion, eight hundred thirteen million, nine hundred ninety-seven thousand, three hundred seventy-eight".