1693681313 has 2 divisors, whose sum is σ = 1693681314. Its totient is φ = 1693681312.

The previous prime is 1693681307. The next prime is 1693681333. The reversal of 1693681313 is 3131863961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1246654864 + 447026449 = 35308^2 + 21143^2 .

It is a cyclic number.

It is not a de Polignac number, because 1693681313 - 2¹² = 1693677217 is a prime.

It is not a weakly prime, because it can be changed into another prime (1693681333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 846840656 + 846840657.

It is an arithmetic number, because the mean of its divisors is an integer number (846840657).

Almost surely, 2^1693681313 is an apocalyptic number.

It is an amenable number.

1693681313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1693681313 is an equidigital number, since it uses as much as digits as its factorization.

1693681313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 41.

The square root of 1693681313 is about 41154.3595868044. The cubic root of 1693681313 is about 1192.0026802880.

The spelling of 1693681313 in words is "one billion, six hundred ninety-three million, six hundred eighty-one thousand, three hundred thirteen".