1694540208241 has 2 divisors, whose sum is σ = 1694540208242. Its totient is φ = 1694540208240.

The previous prime is 1694540208199. The next prime is 1694540208301. The reversal of 1694540208241 is 1428020454961.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1694540045025 + 163216 = 1301745^2 + 404^2 .

It is a cyclic number.

It is not a de Polignac number, because 1694540208241 - 2⁷ = 1694540208113 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1694540208191 and 1694540208200.

It is not a weakly prime, because it can be changed into another prime (1694540208841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 847270104120 + 847270104121.

It is an arithmetic number, because the mean of its divisors is an integer number (847270104121).

Almost surely, 2^{1694540208241} is an apocalyptic number.

It is an amenable number.

1694540208241 is a deficient number, since it is larger than the sum of its proper divisors (1).

1694540208241 is an equidigital number, since it uses as much as digits as its factorization.

1694540208241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 552960, while the sum is 46.

The spelling of 1694540208241 in words is "one trillion, six hundred ninety-four billion, five hundred forty million, two hundred eight thousand, two hundred forty-one".