19193144444 has 24 divisors (see below), whose sum is σ = 33711157200. Its totient is φ = 9561442176.

The previous prime is 19193144431. The next prime is 19193144473. The reversal of 19193144444 is 44444139191.

It is a junction number, because it is equal to n+sod(n) for n = 19193144395 and 19193144404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1481507 + ... + 1494405.

It is an arithmetic number, because the mean of its divisors is an integer number (1404631550).

Almost surely, 2^19193144444 is an apocalyptic number.

It is an amenable number.

19193144444 is a deficient number, since it is larger than the sum of its proper divisors (14518012756).

19193144444 is a wasteful number, since it uses less digits than its factorization.

19193144444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14237 (or 14235 counting only the distinct ones).

The product of its digits is 248832, while the sum is 44.

The spelling of 19193144444 in words is "nineteen billion, one hundred ninety-three million, one hundred forty-four thousand, four hundred forty-four".