19680730135 has 32 divisors (see below), whose sum is σ = 25960421952. Its totient is φ = 14204436480.

The previous prime is 19680730117. The next prime is 19680730141. The reversal of 19680730135 is 53103708691.

It is not a de Polignac number, because 19680730135 - 2⁵ = 19680730103 is a prime.

It is a super-2 number, since 2×19680730135² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19680730091 and 19680730100.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4849027 + ... + 4853083.

It is an arithmetic number, because the mean of its divisors is an integer number (811263186).

Almost surely, 2^19680730135 is an apocalyptic number.

19680730135 is a deficient number, since it is larger than the sum of its proper divisors (6279691817).

19680730135 is a wasteful number, since it uses less digits than its factorization.

19680730135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4723.

The product of its (nonzero) digits is 136080, while the sum is 43.

The spelling of 19680730135 in words is "nineteen billion, six hundred eighty million, seven hundred thirty thousand, one hundred thirty-five".