3847135613 has 4 divisors (see below), whose sum is σ = 3847335228. Its totient is φ = 3846936000.

The previous prime is 3847135577. The next prime is 3847135631. The reversal of 3847135613 is 3165317483.

It is a happy number.

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 3703087609 + 144048004 = 60853^2 + 12002^2 .

It is a cyclic number.

It is not a de Polignac number, because 3847135613 - 2²⁴ = 3830358397 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3847135813) 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, 67388 + ... + 110613.

It is an arithmetic number, because the mean of its divisors is an integer number (961833807).

Almost surely, 2^3847135613 is an apocalyptic number.

It is an amenable number.

3847135613 is a deficient number, since it is larger than the sum of its proper divisors (199615).

3847135613 is a wasteful number, since it uses less digits than its factorization.

3847135613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199614.

The product of its digits is 181440, while the sum is 41.

The square root of 3847135613 is about 62025.2820469202. The cubic root of 3847135613 is about 1566.9164208788.

The spelling of 3847135613 in words is "three billion, eight hundred forty-seven million, one hundred thirty-five thousand, six hundred thirteen".