19473126208 has 28 divisors (see below), whose sum is σ = 38713480612. Its totient is φ = 9718548480.

The previous prime is 19473126149. The next prime is 19473126227. The reversal of 19473126208 is 80262137491.

It can be written as a sum of positive squares in 2 ways, for example, as 11748825664 + 7724300544 = 108392^2 + 87888^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 246585 + ... + 315832.

Almost surely, 2^19473126208 is an apocalyptic number.

It is an amenable number.

19473126208 is a deficient number, since it is larger than the sum of its proper divisors (19240354404).

19473126208 is an equidigital number, since it uses as much as digits as its factorization.

19473126208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 562970 (or 562960 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The spelling of 19473126208 in words is "nineteen billion, four hundred seventy-three million, one hundred twenty-six thousand, two hundred eight".