19875289831 has 2 divisors, whose sum is σ = 19875289832. Its totient is φ = 19875289830.

The previous prime is 19875289817. The next prime is 19875289901. The reversal of 19875289831 is 13898257891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19875289831 - 2⁵ = 19875289799 is a prime.

It is a super-2 number, since 2×19875289831² (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 19875289831.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19875289331) 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 as a sum of consecutive naturals, namely, 9937644915 + 9937644916.

It is an arithmetic number, because the mean of its divisors is an integer number (9937644916).

Almost surely, 2^19875289831 is an apocalyptic number.

19875289831 is a deficient number, since it is larger than the sum of its proper divisors (1).

19875289831 is an equidigital number, since it uses as much as digits as its factorization.

19875289831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8709120, while the sum is 61.

The spelling of 19875289831 in words is "nineteen billion, eight hundred seventy-five million, two hundred eighty-nine thousand, eight hundred thirty-one".