19830428409 has 16 divisors (see below), whose sum is σ = 29774721024. Its totient is φ = 11630749200.

The previous prime is 19830428407. The next prime is 19830428417. The reversal of 19830428409 is 90482403891.

It is not a de Polignac number, because 19830428409 - 2¹ = 19830428407 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19830428407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9691269 + ... + 9693314.

It is an arithmetic number, because the mean of its divisors is an integer number (1860920064).

Almost surely, 2^19830428409 is an apocalyptic number.

It is an amenable number.

19830428409 is a deficient number, since it is larger than the sum of its proper divisors (9944292615).

19830428409 is a wasteful number, since it uses less digits than its factorization.

19830428409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19384628.

The product of its (nonzero) digits is 497664, while the sum is 48.

The spelling of 19830428409 in words is "nineteen billion, eight hundred thirty million, four hundred twenty-eight thousand, four hundred nine".