19893127469 has 8 divisors (see below), whose sum is σ = 20015520000. Its totient is φ = 19771106256.

The previous prime is 19893127427. The next prime is 19893127487. The reversal of 19893127469 is 96472139891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19893127469 is a prime.

It is a super-2 number, since 2×19893127469² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19893127369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15032 + ... + 200030.

It is an arithmetic number, because the mean of its divisors is an integer number (2501940000).

Almost surely, 2^19893127469 is an apocalyptic number.

It is an amenable number.

19893127469 is a deficient number, since it is larger than the sum of its proper divisors (122392531).

19893127469 is a wasteful number, since it uses less digits than its factorization.

19893127469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185659.

The product of its digits is 5878656, while the sum is 59.

The spelling of 19893127469 in words is "nineteen billion, eight hundred ninety-three million, one hundred twenty-seven thousand, four hundred sixty-nine".