19805169596 has 6 divisors (see below), whose sum is σ = 34659046800. Its totient is φ = 9902584796.

The previous prime is 19805169581. The next prime is 19805169641. The reversal of 19805169596 is 69596150891.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2475646196 + ... + 2475646203.

It is an arithmetic number, because the mean of its divisors is an integer number (5776507800).

Almost surely, 2^19805169596 is an apocalyptic number.

It is an amenable number.

19805169596 is a deficient number, since it is larger than the sum of its proper divisors (14853877204).

19805169596 is a wasteful number, since it uses less digits than its factorization.

19805169596 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4951292403 (or 4951292401 counting only the distinct ones).

The product of its (nonzero) digits is 5248800, while the sum is 59.

The spelling of 19805169596 in words is "nineteen billion, eight hundred five million, one hundred sixty-nine thousand, five hundred ninety-six".