8673872531 has 2 divisors, whose sum is σ = 8673872532. Its totient is φ = 8673872530.

The previous prime is 8673872527. The next prime is 8673872567. The reversal of 8673872531 is 1352783768.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8673872531 - 2² = 8673872527 is a prime.

It is a super-2 number, since 2×8673872531² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8673872531.

It is not a weakly prime, because it can be changed into another prime (8673872731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4336936265 + 4336936266.

It is an arithmetic number, because the mean of its divisors is an integer number (4336936266).

Almost surely, 2^8673872531 is an apocalyptic number.

8673872531 is a deficient number, since it is larger than the sum of its proper divisors (1).

8673872531 is an equidigital number, since it uses as much as digits as its factorization.

8673872531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1693440, while the sum is 50.

The square root of 8673872531 is about 93133.6272835972. The cubic root of 8673872531 is about 2054.6491770137.

The spelling of 8673872531 in words is "eight billion, six hundred seventy-three million, eight hundred seventy-two thousand, five hundred thirty-one".