1683536581091 has 2 divisors, whose sum is σ = 1683536581092. Its totient is φ = 1683536581090.

The previous prime is 1683536581043. The next prime is 1683536581099. The reversal of 1683536581091 is 1901856353861.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1683536581091 - 2¹⁰ = 1683536580067 is a prime.

It is not a weakly prime, because it can be changed into another prime (1683536581099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 841768290545 + 841768290546.

It is an arithmetic number, because the mean of its divisors is an integer number (841768290546).

Almost surely, 2^{1683536581091} is an apocalyptic number.

1683536581091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1683536581091 is an equidigital number, since it uses as much as digits as its factorization.

1683536581091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4665600, while the sum is 56.

The spelling of 1683536581091 in words is "one trillion, six hundred eighty-three billion, five hundred thirty-six million, five hundred eighty-one thousand, ninety-one".