19491204596 has 12 divisors (see below), whose sum is σ = 34129011840. Its totient is φ = 9740058360.

The previous prime is 19491204589. The next prime is 19491204661. The reversal of 19491204596 is 69540219491.

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, 1378070 + ... + 1392141.

It is an arithmetic number, because the mean of its divisors is an integer number (2844084320).

Almost surely, 2^19491204596 is an apocalyptic number.

It is an amenable number.

19491204596 is a deficient number, since it is larger than the sum of its proper divisors (14637807244).

19491204596 is a wasteful number, since it uses less digits than its factorization.

19491204596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2771974 (or 2771972 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 50.

The spelling of 19491204596 in words is "nineteen billion, four hundred ninety-one million, two hundred four thousand, five hundred ninety-six".