19844052466 has 32 divisors (see below), whose sum is σ = 36046033920. Its totient is φ = 8003610000.

The previous prime is 19844052461. The next prime is 19844052511. The reversal of 19844052466 is 66425044891.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (19844052461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 206860 + ... + 287191.

It is an arithmetic number, because the mean of its divisors is an integer number (1126438560).

Almost surely, 2^19844052466 is an apocalyptic number.

19844052466 is a deficient number, since it is larger than the sum of its proper divisors (16201981454).

19844052466 is a wasteful number, since it uses less digits than its factorization.

19844052466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494230.

The product of its (nonzero) digits is 1658880, while the sum is 49.

The spelling of 19844052466 in words is "nineteen billion, eight hundred forty-four million, fifty-two thousand, four hundred sixty-six".