3851435378 has 18 divisors (see below), whose sum is σ = 6721433901. Its totient is φ = 1650351864.

The previous prime is 3851435369. The next prime is 3851435389. The reversal of 3851435378 is 8735341583.

3851435378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 3718194529 + 133240849 = 60977^2 + 11543^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=43883.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 611228 + ... + 617496.

Almost surely, 2^3851435378 is an apocalyptic number.

3851435378 is a deficient number, since it is larger than the sum of its proper divisors (2869998523).

3851435378 is an frugal number, since it uses more digits than its factorization.

3851435378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12554 (or 6278 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 47.

The square root of 3851435378 is about 62059.9337576185. The cubic root of 3851435378 is about 1567.4999601318.

The spelling of 3851435378 in words is "three billion, eight hundred fifty-one million, four hundred thirty-five thousand, three hundred seventy-eight".