19944017054 has 32 divisors (see below), whose sum is σ = 33341353920. Its totient is φ = 8884012032.

The previous prime is 19944017047. The next prime is 19944017057. The reversal of 19944017054 is 45071044991.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 19944016996 and 19944017014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19944017057) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3259502 + ... + 3265614.

It is an arithmetic number, because the mean of its divisors is an integer number (1041917310).

Almost surely, 2^19944017054 is an apocalyptic number.

19944017054 is a deficient number, since it is larger than the sum of its proper divisors (13397336866).

19944017054 is a wasteful number, since it uses less digits than its factorization.

19944017054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10484.

The product of its (nonzero) digits is 181440, while the sum is 44.

The spelling of 19944017054 in words is "nineteen billion, nine hundred forty-four million, seventeen thousand, fifty-four".