19447464869 has 8 divisors (see below), whose sum is σ = 22243061760. Its totient is φ = 16656214896.

The previous prime is 19447464863. The next prime is 19447464889. The reversal of 19447464869 is 96846474491.

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

It is a cyclic number.

It is not a de Polignac number, because 19447464869 - 2²⁸ = 19179029413 is a prime.

It is a super-2 number, since 2×19447464869² (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 (19447464863) 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, 1077134 + ... + 1095039.

It is an arithmetic number, because the mean of its divisors is an integer number (2780382720).

Almost surely, 2^19447464869 is an apocalyptic number.

It is an amenable number.

19447464869 is a deficient number, since it is larger than the sum of its proper divisors (2795596891).

19447464869 is a wasteful number, since it uses less digits than its factorization.

19447464869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2173459.

The product of its digits is 41803776, while the sum is 62.

The spelling of 19447464869 in words is "nineteen billion, four hundred forty-seven million, four hundred sixty-four thousand, eight hundred sixty-nine".