1686161383 has 2 divisors, whose sum is σ = 1686161384. Its totient is φ = 1686161382.

The previous prime is 1686161369. The next prime is 1686161417. The reversal of 1686161383 is 3831616861.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1686161383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1686161353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 843080691 + 843080692.

It is an arithmetic number, because the mean of its divisors is an integer number (843080692).

Almost surely, 2^1686161383 is an apocalyptic number.

1686161383 is a deficient number, since it is larger than the sum of its proper divisors (1).

1686161383 is an equidigital number, since it uses as much as digits as its factorization.

1686161383 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 43.

The square root of 1686161383 is about 41062.8954531947. The cubic root of 1686161383 is about 1190.2359024354.

The spelling of 1686161383 in words is "one billion, six hundred eighty-six million, one hundred sixty-one thousand, three hundred eighty-three".