19206478696 has 8 divisors (see below), whose sum is σ = 36012147570. Its totient is φ = 9603239344.

The previous prime is 19206478651. The next prime is 19206478721. The reversal of 19206478696 is 69687460291.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 13462960900 + 5743517796 = 116030^2 + 75786^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 19206478696.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1200404911 + ... + 1200404926.

Almost surely, 2^19206478696 is an apocalyptic number.

It is an amenable number.

19206478696 is a deficient number, since it is larger than the sum of its proper divisors (16805668874).

19206478696 is a wasteful number, since it uses less digits than its factorization.

19206478696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2400809843 (or 2400809839 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 58.

The spelling of 19206478696 in words is "nineteen billion, two hundred six million, four hundred seventy-eight thousand, six hundred ninety-six".