8163408313 has 4 divisors (see below), whose sum is σ = 8643608820. Its totient is φ = 7683207808.

The previous prime is 8163408299. The next prime is 8163408371. The reversal of 8163408313 is 3138043618.

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 4946590224 + 3216818089 = 70332^2 + 56717^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8163408313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8163408373) 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, 240100228 + ... + 240100261.

It is an arithmetic number, because the mean of its divisors is an integer number (2160902205).

Almost surely, 2^8163408313 is an apocalyptic number.

It is an amenable number.

8163408313 is a deficient number, since it is larger than the sum of its proper divisors (480200507).

8163408313 is a wasteful number, since it uses less digits than its factorization.

8163408313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480200506.

The product of its (nonzero) digits is 41472, while the sum is 37.

The square root of 8163408313 is about 90351.5816851039. The cubic root of 8163408313 is about 2013.5256811873.

The spelling of 8163408313 in words is "eight billion, one hundred sixty-three million, four hundred eight thousand, three hundred thirteen".