8531872613 has 8 divisors (see below), whose sum is σ = 9797365920. Its totient is φ = 7348024080.

The previous prime is 8531872597. The next prime is 8531872631. The reversal of 8531872613 is 3162781358.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8531872613 - 2⁴ = 8531872597 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 (8531872633) 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 7 ways as a sum of consecutive naturals, for example, 20410970 + ... + 20411387.

It is an arithmetic number, because the mean of its divisors is an integer number (1224670740).

Almost surely, 2^8531872613 is an apocalyptic number.

It is an amenable number.

8531872613 is a deficient number, since it is larger than the sum of its proper divisors (1265493307).

8531872613 is a wasteful number, since it uses less digits than its factorization.

8531872613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40822387.

The product of its digits is 241920, while the sum is 44.

The square root of 8531872613 is about 92368.1363512332. The cubic root of 8531872613 is about 2043.3752126697.

The spelling of 8531872613 in words is "eight billion, five hundred thirty-one million, eight hundred seventy-two thousand, six hundred thirteen".