19504905086 has 16 divisors (see below), whose sum is σ = 32046600240. Its totient is φ = 8862268800.

The previous prime is 19504905041. The next prime is 19504905109. The reversal of 19504905086 is 68050940591.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 19504905086.

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, 9889940 + ... + 9891911.

It is an arithmetic number, because the mean of its divisors is an integer number (2002912515).

Almost surely, 2^19504905086 is an apocalyptic number.

19504905086 is a deficient number, since it is larger than the sum of its proper divisors (12541695154).

19504905086 is a wasteful number, since it uses less digits than its factorization.

19504905086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19781899.

The product of its (nonzero) digits is 388800, while the sum is 47.

The spelling of 19504905086 in words is "nineteen billion, five hundred four million, nine hundred five thousand, eighty-six".