19441724805 has 24 divisors (see below), whose sum is σ = 34482690528. Its totient is φ = 10127781216.

The previous prime is 19441724801. The next prime is 19441724837. The reversal of 19441724805 is 50842714491.

19441724805 is a `hidden beast` number, since 194 + 417 + 2 + 48 + 0 + 5 = 666.

It is not a de Polignac number, because 19441724805 - 2² = 19441724801 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19441724801) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5021767 + ... + 5025636.

It is an arithmetic number, because the mean of its divisors is an integer number (1436778772).

Almost surely, 2^19441724805 is an apocalyptic number.

19441724805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19441724805 is a deficient number, since it is larger than the sum of its proper divisors (15040965723).

19441724805 is a wasteful number, since it uses less digits than its factorization.

19441724805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10047457 (or 10047454 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The spelling of 19441724805 in words is "nineteen billion, four hundred forty-one million, seven hundred twenty-four thousand, eight hundred five".