1904549042717 has 2 divisors, whose sum is σ = 1904549042718. Its totient is φ = 1904549042716.

The previous prime is 1904549042713. The next prime is 1904549042777. The reversal of 1904549042717 is 7172409454091.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1904526962116 + 22080601 = 1380046^2 + 4699^2 .

It is a cyclic number.

It is not a de Polignac number, because 1904549042717 - 2² = 1904549042713 is a prime.

It is a super-2 number, since 2×1904549042717² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1904549042713) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 952274521358 + 952274521359.

It is an arithmetic number, because the mean of its divisors is an integer number (952274521359).

Almost surely, 2^{1904549042717} is an apocalyptic number.

It is an amenable number.

1904549042717 is a deficient number, since it is larger than the sum of its proper divisors (1).

1904549042717 is an equidigital number, since it uses as much as digits as its factorization.

1904549042717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2540160, while the sum is 53.

The spelling of 1904549042717 in words is "one trillion, nine hundred four billion, five hundred forty-nine million, forty-two thousand, seven hundred seventeen".