19120911911 has 8 divisors (see below), whose sum is σ = 20055518400. Its totient is φ = 18208296288.

The previous prime is 19120911893. The next prime is 19120911913. The reversal of 19120911911 is 11911902191.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19120911911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19120911913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5495936 + ... + 5499413.

It is an arithmetic number, because the mean of its divisors is an integer number (2506939800).

Almost surely, 2^19120911911 is an apocalyptic number.

19120911911 is a deficient number, since it is larger than the sum of its proper divisors (934606489).

19120911911 is a wasteful number, since it uses less digits than its factorization.

19120911911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10995433.

The product of its (nonzero) digits is 1458, while the sum is 35.

The spelling of 19120911911 in words is "nineteen billion, one hundred twenty million, nine hundred eleven thousand, nine hundred eleven".