19116964459 has 16 divisors (see below), whose sum is σ = 20029201920. Its totient is φ = 18221928480.

The previous prime is 19116964453. The next prime is 19116964481. The reversal of 19116964459 is 95446961191.

It is a cyclic number.

It is not a de Polignac number, because 19116964459 - 2²¹ = 19114867307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19116964453) 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, 5127454 + ... + 5131180.

It is an arithmetic number, because the mean of its divisors is an integer number (1251825120).

Almost surely, 2^19116964459 is an apocalyptic number.

19116964459 is a deficient number, since it is larger than the sum of its proper divisors (912237461).

19116964459 is a wasteful number, since it uses less digits than its factorization.

19116964459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5970.

The product of its digits is 2099520, while the sum is 55.

The spelling of 19116964459 in words is "nineteen billion, one hundred sixteen million, nine hundred sixty-four thousand, four hundred fifty-nine".