19744196408 has 32 divisors (see below), whose sum is σ = 38979955200. Its totient is φ = 9349839072.

The previous prime is 19744196369. The next prime is 19744196413. The reversal of 19744196408 is 80469144791.

It is a self number, because there is not a number n which added to its sum of digits gives 19744196408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 577241 + ... + 610487.

It is an arithmetic number, because the mean of its divisors is an integer number (1218123600).

Almost surely, 2^19744196408 is an apocalyptic number.

It is an amenable number.

19744196408 is a deficient number, since it is larger than the sum of its proper divisors (19235758792).

19744196408 is a wasteful number, since it uses less digits than its factorization.

19744196408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37179 (or 37175 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 53.

The spelling of 19744196408 in words is "nineteen billion, seven hundred forty-four million, one hundred ninety-six thousand, four hundred eight".