19625871868 has 6 divisors (see below), whose sum is σ = 34345275776. Its totient is φ = 9812935932.

The previous prime is 19625871851. The next prime is 19625871869. The reversal of 19625871868 is 86817852691.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19625871869) 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, 2453233980 + ... + 2453233987.

Almost surely, 2^19625871868 is an apocalyptic number.

It is an amenable number.

19625871868 is a deficient number, since it is larger than the sum of its proper divisors (14719403908).

19625871868 is a wasteful number, since it uses less digits than its factorization.

19625871868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4906467971 (or 4906467969 counting only the distinct ones).

The product of its digits is 11612160, while the sum is 61.

The spelling of 19625871868 in words is "nineteen billion, six hundred twenty-five million, eight hundred seventy-one thousand, eight hundred sixty-eight".