19505164604 has 12 divisors (see below), whose sum is σ = 34140592584. Its totient is φ = 9750709584.

The previous prime is 19505164529. The next prime is 19505164619. The reversal of 19505164604 is 40646150591.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 444614 + ... + 486509.

It is an arithmetic number, because the mean of its divisors is an integer number (2845049382).

Almost surely, 2^19505164604 is an apocalyptic number.

It is an amenable number.

19505164604 is a deficient number, since it is larger than the sum of its proper divisors (14635427980).

19505164604 is a wasteful number, since it uses less digits than its factorization.

19505164604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936364 (or 936362 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 41.

The spelling of 19505164604 in words is "nineteen billion, five hundred five million, one hundred sixty-four thousand, six hundred four".