19478343132 has 240 divisors, whose sum is σ = 55061233920. Its totient is φ = 5989116672.

The previous prime is 19478343121. The next prime is 19478343149. The reversal of 19478343132 is 23134387491.

19478343132 is a `hidden beast` number, since 1 + 9 + 478 + 3 + 43 + 132 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 28518463 + ... + 28519145.

It is an arithmetic number, because the mean of its divisors is an integer number (229421808).

Almost surely, 2^19478343132 is an apocalyptic number.

19478343132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19478343132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27530616960).

19478343132 is an abundant number, since it is smaller than the sum of its proper divisors (35582890788).

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

19478343132 is a wasteful number, since it uses less digits than its factorization.

19478343132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 854 (or 843 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The spelling of 19478343132 in words is "nineteen billion, four hundred seventy-eight million, three hundred forty-three thousand, one hundred thirty-two".