3845138347 has 2 divisors, whose sum is σ = 3845138348. Its totient is φ = 3845138346.

The previous prime is 3845138329. The next prime is 3845138369. The reversal of 3845138347 is 7438315483.

It is a happy number.

3845138347 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3845138347 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3845138297 and 3845138306.

It is not a weakly prime, because it can be changed into another prime (3845138317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1922569173 + 1922569174.

It is an arithmetic number, because the mean of its divisors is an integer number (1922569174).

Almost surely, 2^3845138347 is an apocalyptic number.

3845138347 is a deficient number, since it is larger than the sum of its proper divisors (1).

3845138347 is an equidigital number, since it uses as much as digits as its factorization.

3845138347 is an evil number, because the sum of its binary digits is even.

The product of its digits is 967680, while the sum is 46.

The square root of 3845138347 is about 62009.1795381942. The cubic root of 3845138347 is about 1566.6452155858.

The spelling of 3845138347 in words is "three billion, eight hundred forty-five million, one hundred thirty-eight thousand, three hundred forty-seven".