8621813113 has 4 divisors (see below), whose sum is σ = 8622347380. Its totient is φ = 8621278848.

The previous prime is 8621813089. The next prime is 8621813119. The reversal of 8621813113 is 3113181268.

It is a happy number.

8621813113 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 5747459344 + 2874353769 = 75812^2 + 53613^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8621813113 is a prime.

It is a super-2 number, since 2×8621813113² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8621813119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 242148 + ... + 275461.

It is an arithmetic number, because the mean of its divisors is an integer number (2155586845).

Almost surely, 2^8621813113 is an apocalyptic number.

It is an amenable number.

8621813113 is a deficient number, since it is larger than the sum of its proper divisors (534267).

8621813113 is a wasteful number, since it uses less digits than its factorization.

8621813113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534266.

The product of its digits is 6912, while the sum is 34.

The square root of 8621813113 is about 92853.7188969833. The cubic root of 8621813113 is about 2050.5303496360.

The spelling of 8621813113 in words is "eight billion, six hundred twenty-one million, eight hundred thirteen thousand, one hundred thirteen".