19441645047 has 12 divisors (see below), whose sum is σ = 30635319624. Its totient is φ = 11782815120.

The previous prime is 19441645039. The next prime is 19441645049. The reversal of 19441645047 is 74054614491.

19441645047 is a `hidden beast` number, since 194 + 4 + 1 + 6 + 450 + 4 + 7 = 666.

It is not a de Polignac number, because 19441645047 - 2³ = 19441645039 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 19441644993 and 19441645011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19441645049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 98190028 + ... + 98190225.

It is an arithmetic number, because the mean of its divisors is an integer number (2552943302).

Almost surely, 2^19441645047 is an apocalyptic number.

19441645047 is a deficient number, since it is larger than the sum of its proper divisors (11193674577).

19441645047 is a wasteful number, since it uses less digits than its factorization.

19441645047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196380270 (or 196380267 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 19441645047 in words is "nineteen billion, four hundred forty-one million, six hundred forty-five thousand, forty-seven".