19679883385 has 8 divisors (see below), whose sum is σ = 23632348680. Its totient is φ = 15732914304.

The previous prime is 19679883361. The next prime is 19679883409. The reversal of 19679883385 is 58338897691.

It is an interprime number because it is at equal distance from previous prime (19679883361) and next prime (19679883409).

It can be written as a sum of positive squares in 4 ways, for example, as 4518393961 + 15161489424 = 67219^2 + 123132^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 19679883385 - 2³¹ = 17532399737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19679883385.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1366170 + ... + 1380499.

It is an arithmetic number, because the mean of its divisors is an integer number (2954043585).

Almost surely, 2^19679883385 is an apocalyptic number.

It is an amenable number.

19679883385 is a deficient number, since it is larger than the sum of its proper divisors (3952465295).

19679883385 is a wasteful number, since it uses less digits than its factorization.

19679883385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2748107.

The product of its digits is 78382080, while the sum is 67.

The spelling of 19679883385 in words is "nineteen billion, six hundred seventy-nine million, eight hundred eighty-three thousand, three hundred eighty-five".