19647606674 has 8 divisors (see below), whose sum is σ = 29478788028. Its totient is φ = 9821344000.

The previous prime is 19647606637. The next prime is 19647606709. The reversal of 19647606674 is 47660674691.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19517487025 + 130119649 = 139705^2 + 11407^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1219667 + ... + 1235670.

Almost surely, 2^19647606674 is an apocalyptic number.

19647606674 is a deficient number, since it is larger than the sum of its proper divisors (9831181354).

19647606674 is a wasteful number, since it uses less digits than its factorization.

19647606674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2459340.

The product of its (nonzero) digits is 9144576, while the sum is 56.

The spelling of 19647606674 in words is "nineteen billion, six hundred forty-seven million, six hundred six thousand, six hundred seventy-four".