19485658492 has 12 divisors (see below), whose sum is σ = 34129485376. Its totient is φ = 9734376960.

The previous prime is 19485658459. The next prime is 19485658523. The reversal of 19485658492 is 29485658491.

It is a self number, because there is not a number n which added to its sum of digits gives 19485658492.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2107884 + ... + 2117107.

Almost surely, 2^19485658492 is an apocalyptic number.

It is an amenable number.

19485658492 is a deficient number, since it is larger than the sum of its proper divisors (14643826884).

19485658492 is a wasteful number, since it uses less digits than its factorization.

19485658492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4226148 (or 4226146 counting only the distinct ones).

The product of its digits is 24883200, while the sum is 61.

Subtracting 19485658492 from its reverse (29485658491), we obtain a palindrome (9999999999).

The spelling of 19485658492 in words is "nineteen billion, four hundred eighty-five million, six hundred fifty-eight thousand, four hundred ninety-two".