19936368009 has 24 divisors (see below), whose sum is σ = 29616762240. Its totient is φ = 12913557408.

The previous prime is 19936367981. The next prime is 19936368041. The reversal of 19936368009 is 90086363991.

It is not a de Polignac number, because 19936368009 - 2²⁵ = 19902813577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19936368059) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 197794 + ... + 281060.

It is an arithmetic number, because the mean of its divisors is an integer number (1234031760).

Almost surely, 2^19936368009 is an apocalyptic number.

It is an amenable number.

19936368009 is a deficient number, since it is larger than the sum of its proper divisors (9680394231).

19936368009 is a wasteful number, since it uses less digits than its factorization.

19936368009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84029 (or 84026 counting only the distinct ones).

The product of its (nonzero) digits is 1889568, while the sum is 54.

The spelling of 19936368009 in words is "nineteen billion, nine hundred thirty-six million, three hundred sixty-eight thousand, nine".