1685789323 has 2 divisors, whose sum is σ = 1685789324. Its totient is φ = 1685789322.

The previous prime is 1685789321. The next prime is 1685789327. The reversal of 1685789323 is 3239875861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1685789323 - 2¹ = 1685789321 is a prime.

Together with 1685789321, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1685789321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 842894661 + 842894662.

It is an arithmetic number, because the mean of its divisors is an integer number (842894662).

Almost surely, 2^1685789323 is an apocalyptic number.

1685789323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1685789323 is an equidigital number, since it uses as much as digits as its factorization.

1685789323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2177280, while the sum is 52.

The square root of 1685789323 is about 41058.3648359259. The cubic root of 1685789323 is about 1190.1483521472.

The spelling of 1685789323 in words is "one billion, six hundred eighty-five million, seven hundred eighty-nine thousand, three hundred twenty-three".