1709890493 has 2 divisors, whose sum is σ = 1709890494. Its totient is φ = 1709890492.

The previous prime is 1709890487. The next prime is 1709890613. The reversal of 1709890493 is 3940989071.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1703873284 + 6017209 = 41278^2 + 2453^2 .

It is an emirp because it is prime and its reverse (3940989071) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1709890493 - 2¹⁶ = 1709824957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1709890423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 854945246 + 854945247.

It is an arithmetic number, because the mean of its divisors is an integer number (854945247).

Almost surely, 2^1709890493 is an apocalyptic number.

It is an amenable number.

1709890493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1709890493 is an equidigital number, since it uses as much as digits as its factorization.

1709890493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 1709890493 is about 41350.8221562764. The cubic root of 1709890493 is about 1195.7932544669.

The spelling of 1709890493 in words is "one billion, seven hundred nine million, eight hundred ninety thousand, four hundred ninety-three".