19731081469 has 12 divisors (see below), whose sum is σ = 22387496320. Its totient is φ = 17358719400.

The previous prime is 19731081413. The next prime is 19731081493. The reversal of 19731081469 is 96418013791.

It is a de Polignac number, because none of the positive numbers 2^k-19731081469 is a prime.

It is a super-2 number, since 2×19731081469² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19731081269) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2626359 + ... + 2633860.

Almost surely, 2^19731081469 is an apocalyptic number.

It is an amenable number.

19731081469 is a deficient number, since it is larger than the sum of its proper divisors (2656414851).

19731081469 is a wasteful number, since it uses less digits than its factorization.

19731081469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5260272 (or 5260261 counting only the distinct ones).

The product of its (nonzero) digits is 326592, while the sum is 49.

The spelling of 19731081469 in words is "nineteen billion, seven hundred thirty-one million, eighty-one thousand, four hundred sixty-nine".