19091091001109 has 8 divisors (see below), whose sum is σ = 19198816045920. Its totient is φ = 18983377855600.

The previous prime is 19091091001093. The next prime is 19091091001133. The reversal of 19091091001109 is 90110019019091.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 19091091001109 - 2⁴ = 19091091001093 is a prime.

It is a super-2 number, since 2×19091091001109² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19091091001189) 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, 252854 + ... + 6184344.

It is an arithmetic number, because the mean of its divisors is an integer number (2399852005740).

Almost surely, 2^{19091091001109} is an apocalyptic number.

It is an amenable number.

19091091001109 is a deficient number, since it is larger than the sum of its proper divisors (107725044811).

19091091001109 is a wasteful number, since it uses less digits than its factorization.

19091091001109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5949651.

The product of its (nonzero) digits is 6561, while the sum is 41.

The spelling of 19091091001109 in words is "nineteen trillion, ninety-one billion, ninety-one million, one thousand, one hundred nine".