1681683323 has 2 divisors, whose sum is σ = 1681683324. Its totient is φ = 1681683322.

The previous prime is 1681683301. The next prime is 1681683383. The reversal of 1681683323 is 3233861861.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1681683323 - 2²⁶ = 1614574459 is a prime.

It is not a weakly prime, because it can be changed into another prime (1681683383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 840841661 + 840841662.

It is an arithmetic number, because the mean of its divisors is an integer number (840841662).

Almost surely, 2^1681683323 is an apocalyptic number.

1681683323 is a deficient number, since it is larger than the sum of its proper divisors (1).

1681683323 is an equidigital number, since it uses as much as digits as its factorization.

1681683323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 41.

The square root of 1681683323 is about 41008.3323606313. The cubic root of 1681683323 is about 1189.1813032755.

The spelling of 1681683323 in words is "one billion, six hundred eighty-one million, six hundred eighty-three thousand, three hundred twenty-three".