19519928606 has 16 divisors (see below), whose sum is σ = 30520073616. Its totient is φ = 9354445056.

The previous prime is 19519928587. The next prime is 19519928621. The reversal of 19519928606 is 60682991591.

It is a super-2 number, since 2×19519928606² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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, 1963571 + ... + 1973486.

It is an arithmetic number, because the mean of its divisors is an integer number (1907504601).

Almost surely, 2^19519928606 is an apocalyptic number.

19519928606 is a deficient number, since it is larger than the sum of its proper divisors (11000145010).

19519928606 is a wasteful number, since it uses less digits than its factorization.

19519928606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3937163.

The product of its (nonzero) digits is 2099520, while the sum is 56.

The spelling of 19519928606 in words is "nineteen billion, five hundred nineteen million, nine hundred twenty-eight thousand, six hundred six".