19429784315 has 16 divisors (see below), whose sum is σ = 23405481792. Its totient is φ = 15484070784.

The previous prime is 19429784263. The next prime is 19429784333. The reversal of 19429784315 is 51348792491.

It is a cyclic number.

It is not a de Polignac number, because 19429784315 - 2¹⁶ = 19429718779 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2924177 + ... + 2930813.

It is an arithmetic number, because the mean of its divisors is an integer number (1462842612).

Almost surely, 2^19429784315 is an apocalyptic number.

19429784315 is a deficient number, since it is larger than the sum of its proper divisors (3975697477).

19429784315 is a wasteful number, since it uses less digits than its factorization.

19429784315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8806.

The product of its digits is 2177280, while the sum is 53.

The spelling of 19429784315 in words is "nineteen billion, four hundred twenty-nine million, seven hundred eighty-four thousand, three hundred fifteen".