19044101903 has 4 divisors (see below), whose sum is σ = 19160937048. Its totient is φ = 18927266760.

The previous prime is 19044101873. The next prime is 19044101911. The reversal of 19044101903 is 30910144091.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19044101903 - 2¹⁰ = 19044100879 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19044101903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19044101953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 58417328 + ... + 58417653.

It is an arithmetic number, because the mean of its divisors is an integer number (4790234262).

Almost surely, 2^19044101903 is an apocalyptic number.

19044101903 is a deficient number, since it is larger than the sum of its proper divisors (116835145).

19044101903 is a wasteful number, since it uses less digits than its factorization.

19044101903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116835144.

The product of its (nonzero) digits is 3888, while the sum is 32.

Adding to 19044101903 its reverse (30910144091), we get a palindrome (49954245994).

The spelling of 19044101903 in words is "nineteen billion, forty-four million, one hundred one thousand, nine hundred three".