19648006464 has 56 divisors (see below), whose sum is σ = 52208582400. Its totient is φ = 6521211904.

The previous prime is 19648006439. The next prime is 19648006489. The reversal of 19648006464 is 46460084691.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (19648006439) and next prime (19648006489).

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174864 + ... + 264335.

Almost surely, 2^19648006464 is an apocalyptic number.

It is an amenable number.

19648006464 is an abundant number, since it is smaller than the sum of its proper divisors (32560575936).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19648006464 is a wasteful number, since it uses less digits than its factorization.

19648006464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439447 (or 439437 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 48.

The spelling of 19648006464 in words is "nineteen billion, six hundred forty-eight million, six thousand, four hundred sixty-four".