19769405431 has 4 divisors (see below), whose sum is σ = 19770691600. Its totient is φ = 19768119264.

The previous prime is 19769405419. The next prime is 19769405443. The reversal of 19769405431 is 13450496791.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (19769405419) and next prime (19769405443).

It is a cyclic number.

It is not a de Polignac number, because 19769405431 - 2¹⁷ = 19769274359 is a prime.

It is a super-2 number, since 2×19769405431² (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 (19769405401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 619746 + ... + 650863.

It is an arithmetic number, because the mean of its divisors is an integer number (4942672900).

Almost surely, 2^19769405431 is an apocalyptic number.

19769405431 is a deficient number, since it is larger than the sum of its proper divisors (1286169).

19769405431 is a wasteful number, since it uses less digits than its factorization.

19769405431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1286168.

The product of its (nonzero) digits is 816480, while the sum is 49.

The spelling of 19769405431 in words is "nineteen billion, seven hundred sixty-nine million, four hundred five thousand, four hundred thirty-one".