1919218219192 has 8 divisors (see below), whose sum is σ = 3598534161000. Its totient is φ = 959609109592.

The previous prime is 1919218219159. The next prime is 1919218219267. The reversal of 1919218219192 is 2919128129191.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119951138692 + ... + 119951138707.

It is an arithmetic number, because the mean of its divisors is an integer number (449816770125).

Almost surely, 2^{1919218219192} is an apocalyptic number.

It is an amenable number.

1919218219192 is a deficient number, since it is larger than the sum of its proper divisors (1679315941808).

1919218219192 is a wasteful number, since it uses less digits than its factorization.

1919218219192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239902277405 (or 239902277401 counting only the distinct ones).

The product of its digits is 419904, while the sum is 55.

Subtracting 1919218219192 from its reverse (2919128129191), we obtain a palindrome (999909909999).

The spelling of 1919218219192 in words is "one trillion, nine hundred nineteen billion, two hundred eighteen million, two hundred nineteen thousand, one hundred ninety-two".