1713220809 has 4 divisors (see below), whose sum is σ = 2284294416. Its totient is φ = 1142147204.

The previous prime is 1713220801. The next prime is 1713220871. The reversal of 1713220809 is 9080223171.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1713220809 - 2³ = 1713220801 is a prime.

It is a super-2 number, since 2×1713220809² = 5870251080781228962, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1713220809.

It is not an unprimeable number, because it can be changed into a prime (1713220801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285536799 + ... + 285536804.

It is an arithmetic number, because the mean of its divisors is an integer number (571073604).

Almost surely, 2^1713220809 is an apocalyptic number.

It is an amenable number.

1713220809 is a deficient number, since it is larger than the sum of its proper divisors (571073607).

1713220809 is an equidigital number, since it uses as much as digits as its factorization.

1713220809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571073606.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 1713220809 is about 41391.0716097083. The cubic root of 1713220809 is about 1196.5690910405.

The spelling of 1713220809 in words is "one billion, seven hundred thirteen million, two hundred twenty thousand, eight hundred nine".