19692419869 has 16 divisors (see below), whose sum is σ = 21469017600. Its totient is φ = 17991360576.

The previous prime is 19692419839. The next prime is 19692419909. The reversal of 19692419869 is 96891429691.

It is not a de Polignac number, because 19692419869 - 2⁵ = 19692419837 is a prime.

It is a super-2 number, since 2×19692419869² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19692419869.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19692419839) 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, 454807 + ... + 496219.

It is an arithmetic number, because the mean of its divisors is an integer number (1341813600).

Almost surely, 2^19692419869 is an apocalyptic number.

19692419869 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

19692419869 is a deficient number, since it is larger than the sum of its proper divisors (1776597731).

19692419869 is a wasteful number, since it uses less digits than its factorization.

19692419869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42324.

The product of its digits is 15116544, while the sum is 64.

The spelling of 19692419869 in words is "nineteen billion, six hundred ninety-two million, four hundred nineteen thousand, eight hundred sixty-nine".