19091090920193 has 16 divisors (see below), whose sum is σ = 19162382803200. Its totient is φ = 19019950709760.

The previous prime is 19091090920147. The next prime is 19091090920283. The reversal of 19091090920193 is 39102909019091.

It is a cyclic number.

It is not a de Polignac number, because 19091090920193 - 2³⁰ = 19090017178369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19091090920133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 912173153 + ... + 912194081.

It is an arithmetic number, because the mean of its divisors is an integer number (1197648925200).

Almost surely, 2^{19091090920193} is an apocalyptic number.

It is an amenable number.

19091090920193 is a deficient number, since it is larger than the sum of its proper divisors (71291883007).

19091090920193 is a wasteful number, since it uses less digits than its factorization.

19091090920193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24392.

The product of its (nonzero) digits is 354294, while the sum is 53.

The spelling of 19091090920193 in words is "nineteen trillion, ninety-one billion, ninety million, nine hundred twenty thousand, one hundred ninety-three".