19118212205 has 64 divisors (see below), whose sum is σ = 25256448000. Its totient is φ = 13844742912.

The previous prime is 19118212199. The next prime is 19118212277. The reversal of 19118212205 is 50221281191.

It is a cyclic number.

It is not a de Polignac number, because 19118212205 - 2²⁶ = 19051103341 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 41291804 + ... + 41292266.

It is an arithmetic number, because the mean of its divisors is an integer number (394632000).

Almost surely, 2^19118212205 is an apocalyptic number.

It is an amenable number.

19118212205 is a deficient number, since it is larger than the sum of its proper divisors (6138235795).

19118212205 is a wasteful number, since it uses less digits than its factorization.

19118212205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 738.

The product of its (nonzero) digits is 2880, while the sum is 32.

Adding to 19118212205 its reverse (50221281191), we get a palindrome (69339493396).

The spelling of 19118212205 in words is "nineteen billion, one hundred eighteen million, two hundred twelve thousand, two hundred five".