19478112148 has 24 divisors (see below), whose sum is σ = 37209110400. Its totient is φ = 8848062720.

The previous prime is 19478112113. The next prime is 19478112197. The reversal of 19478112148 is 84121187491.

It is a junction number, because it is equal to n+sod(n) for n = 19478112098 and 19478112107.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 70173 + ... + 209476.

It is an arithmetic number, because the mean of its divisors is an integer number (1550379600).

Almost surely, 2^19478112148 is an apocalyptic number.

It is an amenable number.

19478112148 is a deficient number, since it is larger than the sum of its proper divisors (17730998252).

19478112148 is a wasteful number, since it uses less digits than its factorization.

19478112148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281247 (or 281245 counting only the distinct ones).

The product of its digits is 129024, while the sum is 46.

The spelling of 19478112148 in words is "nineteen billion, four hundred seventy-eight million, one hundred twelve thousand, one hundred forty-eight".