19091090920133 has 2 divisors, whose sum is σ = 19091090920134. Its totient is φ = 19091090920132.

The previous prime is 19091090920127. The next prime is 19091090920147. The reversal of 19091090920133 is 33102909019091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14514713193124 + 4576377727009 = 3809818^2 + 2139247^2 .

It is a cyclic number.

It is not a de Polignac number, because 19091090920133 - 2⁴ = 19091090920117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19091090950133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9545545460066 + 9545545460067.

It is an arithmetic number, because the mean of its divisors is an integer number (9545545460067).

Almost surely, 2^{19091090920133} is an apocalyptic number.

It is an amenable number.

19091090920133 is a deficient number, since it is larger than the sum of its proper divisors (1).

19091090920133 is an equidigital number, since it uses as much as digits as its factorization.

19091090920133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 118098, while the sum is 47.

The spelling of 19091090920133 in words is "nineteen trillion, ninety-one billion, ninety million, nine hundred twenty thousand, one hundred thirty-three".