19478784346 has 16 divisors (see below), whose sum is σ = 33394935744. Its totient is φ = 8347366944.

The previous prime is 19478784337. The next prime is 19478784371. The reversal of 19478784346 is 64348787491.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 144781 + ... + 244783.

It is an arithmetic number, because the mean of its divisors is an integer number (2087183484).

Almost surely, 2^19478784346 is an apocalyptic number.

19478784346 is a deficient number, since it is larger than the sum of its proper divisors (13916151398).

19478784346 is a wasteful number, since it uses less digits than its factorization.

19478784346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113925.

The product of its digits is 32514048, while the sum is 61.

The spelling of 19478784346 in words is "nineteen billion, four hundred seventy-eight million, seven hundred eighty-four thousand, three hundred forty-six".