3845138305 has 4 divisors (see below), whose sum is σ = 4614165972. Its totient is φ = 3076110640.

The previous prime is 3845138273. The next prime is 3845138317. The reversal of 3845138305 is 5038315483.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2548634256 + 1296504049 = 50484^2 + 36007^2 .

It is not a de Polignac number, because 3845138305 - 2⁵ = 3845138273 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 384513826 + ... + 384513835.

It is an arithmetic number, because the mean of its divisors is an integer number (1153541493).

Almost surely, 2^3845138305 is an apocalyptic number.

It is an amenable number.

3845138305 is a deficient number, since it is larger than the sum of its proper divisors (769027667).

3845138305 is an equidigital number, since it uses as much as digits as its factorization.

3845138305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769027666.

The product of its (nonzero) digits is 172800, while the sum is 40.

The square root of 3845138305 is about 62009.1791995346. The cubic root of 3845138305 is about 1566.6452098817.

The spelling of 3845138305 in words is "three billion, eight hundred forty-five million, one hundred thirty-eight thousand, three hundred five".