1791435018133 has 2 divisors, whose sum is σ = 1791435018134. Its totient is φ = 1791435018132.

The previous prime is 1791435018091. The next prime is 1791435018169. The reversal of 1791435018133 is 3318105341971.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1170858171844 + 620576846289 = 1082062^2 + 787767^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1791435018133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1791435018833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 895717509066 + 895717509067.

It is an arithmetic number, because the mean of its divisors is an integer number (895717509067).

Almost surely, 2^{1791435018133} is an apocalyptic number.

It is an amenable number.

1791435018133 is a deficient number, since it is larger than the sum of its proper divisors (1).

1791435018133 is an equidigital number, since it uses as much as digits as its factorization.

1791435018133 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 46.

The spelling of 1791435018133 in words is "one trillion, seven hundred ninety-one billion, four hundred thirty-five million, eighteen thousand, one hundred thirty-three".