19679046987 has 8 divisors (see below), whose sum is σ = 26353309840. Its totient is φ = 13062074400.

The previous prime is 19679046931. The next prime is 19679046991. The reversal of 19679046987 is 78964097691.

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

It is not a de Polignac number, because 19679046987 - 2¹¹ = 19679044939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19679045987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14321764 + ... + 14323137.

It is an arithmetic number, because the mean of its divisors is an integer number (3294163730).

Almost surely, 2^19679046987 is an apocalyptic number.

19679046987 is a deficient number, since it is larger than the sum of its proper divisors (6674262853).

19679046987 is a wasteful number, since it uses less digits than its factorization.

19679046987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28645133.

The product of its (nonzero) digits is 41150592, while the sum is 66.

The spelling of 19679046987 in words is "nineteen billion, six hundred seventy-nine million, forty-six thousand, nine hundred eighty-seven".