19412688478 has 8 divisors (see below), whose sum is σ = 29139272640. Its totient is φ = 9699597600.

The previous prime is 19412688469. The next prime is 19412688499. The reversal of 19412688478 is 87488621491.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3369723 + ... + 3375478.

It is an arithmetic number, because the mean of its divisors is an integer number (3642409080).

Almost surely, 2^19412688478 is an apocalyptic number.

19412688478 is a deficient number, since it is larger than the sum of its proper divisors (9726584162).

19412688478 is a wasteful number, since it uses less digits than its factorization.

19412688478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6746642.

The product of its digits is 6193152, while the sum is 58.

The spelling of 19412688478 in words is "nineteen billion, four hundred twelve million, six hundred eighty-eight thousand, four hundred seventy-eight".