19125813871 has 2 divisors, whose sum is σ = 19125813872. Its totient is φ = 19125813870.

The previous prime is 19125813851. The next prime is 19125813899. The reversal of 19125813871 is 17831852191.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 19125813871 - 2¹⁹ = 19125289583 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19125813821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9562906935 + 9562906936.

It is an arithmetic number, because the mean of its divisors is an integer number (9562906936).

Almost surely, 2^19125813871 is an apocalyptic number.

19125813871 is a deficient number, since it is larger than the sum of its proper divisors (1).

19125813871 is an equidigital number, since it uses as much as digits as its factorization.

19125813871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 120960, while the sum is 46.

The spelling of 19125813871 in words is "nineteen billion, one hundred twenty-five million, eight hundred thirteen thousand, eight hundred seventy-one".