7813113187 has 4 divisors (see below), whose sum is σ = 8523396216. Its totient is φ = 7102830160.

The previous prime is 7813113167. The next prime is 7813113233.

7813113187 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 7813113187 - 2³¹ = 5665629539 is a prime.

It is a super-2 number, since 2×7813113187² (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 (7813113107) 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, 355141498 + ... + 355141519.

It is an arithmetic number, because the mean of its divisors is an integer number (2130849054).

Almost surely, 2^7813113187 is an apocalyptic number.

7813113187 is a deficient number, since it is larger than the sum of its proper divisors (710283029).

7813113187 is a wasteful number, since it uses less digits than its factorization.

7813113187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 710283028.

The product of its digits is 28224, while the sum is 40.

The square root of 7813113187 is about 88391.8162897448. The cubic root of 7813113187 is about 1984.3032268655.

The spelling of 7813113187 in words is "seven billion, eight hundred thirteen million, one hundred thirteen thousand, one hundred eighty-seven".