19679427396 has 18 divisors (see below), whose sum is σ = 49745219342. Its totient is φ = 6559809120.

The previous prime is 19679427379. The next prime is 19679427413. The reversal of 19679427396 is 69372497691.

19679427396 is a `hidden beast` number, since 196 + 7 + 94 + 273 + 96 = 666.

It is an interprime number because it is at equal distance from previous prime (19679427379) and next prime (19679427413).

It can be written as a sum of positive squares in only one way, i.e., 18184522500 + 1494904896 = 134850^2 + 38664^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 273325345 + ... + 273325416.

Almost surely, 2^19679427396 is an apocalyptic number.

It is an amenable number.

19679427396 is an abundant number, since it is smaller than the sum of its proper divisors (30065791946).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19679427396 is a wasteful number, since it uses less digits than its factorization.

19679427396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 546650771 (or 546650766 counting only the distinct ones).

The product of its digits is 30862944, while the sum is 63.

The spelling of 19679427396 in words is "nineteen billion, six hundred seventy-nine million, four hundred twenty-seven thousand, three hundred ninety-six".