19091090011 has 8 divisors (see below), whose sum is σ = 21821084640. Its totient is φ = 16361769408.

The previous prime is 19091089999. The next prime is 19091090069. The reversal of 19091090011 is 11009019091.

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-19091090011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19091090911) 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, 106276 + ... + 222433.

It is an arithmetic number, because the mean of its divisors is an integer number (2727635580).

Almost surely, 2^19091090011 is an apocalyptic number.

19091090011 is a deficient number, since it is larger than the sum of its proper divisors (2729994629).

19091090011 is an equidigital number, since it uses as much as digits as its factorization.

19091090011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337013.

The product of its (nonzero) digits is 729, while the sum is 31.

The spelling of 19091090011 in words is "nineteen billion, ninety-one million, ninety thousand, eleven".