1705493389 has 2 divisors, whose sum is σ = 1705493390. Its totient is φ = 1705493388.

The previous prime is 1705493357. The next prime is 1705493399. The reversal of 1705493389 is 9833945071.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1702965289 + 2528100 = 41267^2 + 1590^2 .

It is a cyclic number.

It is not a de Polignac number, because 1705493389 - 2⁵ = 1705493357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1705493399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 852746694 + 852746695.

It is an arithmetic number, because the mean of its divisors is an integer number (852746695).

Almost surely, 2^1705493389 is an apocalyptic number.

It is an amenable number.

1705493389 is a deficient number, since it is larger than the sum of its proper divisors (1).

1705493389 is an equidigital number, since it uses as much as digits as its factorization.

1705493389 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 816480, while the sum is 49.

The square root of 1705493389 is about 41297.6196529534. The cubic root of 1705493389 is about 1194.7673523397.

The spelling of 1705493389 in words is "one billion, seven hundred five million, four hundred ninety-three thousand, three hundred eighty-nine".