19109169044 has 12 divisors (see below), whose sum is σ = 38218338144. Its totient is φ = 8189643864.

The previous prime is 19109169029. The next prime is 19109169061. The reversal of 19109169044 is 44096190191.

19109169044 is an admirable number.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 19109168986 and 19109169004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341235134 + ... + 341235189.

It is an arithmetic number, because the mean of its divisors is an integer number (3184861512).

Almost surely, 2^19109169044 is an apocalyptic number.

19109169044 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

19109169044 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19109169044 is a wasteful number, since it uses less digits than its factorization.

19109169044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 682470334 (or 682470332 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 44.

The spelling of 19109169044 in words is "nineteen billion, one hundred nine million, one hundred sixty-nine thousand, forty-four".