1694342427457 has 2 divisors, whose sum is σ = 1694342427458. Its totient is φ = 1694342427456.

The previous prime is 1694342427443. The next prime is 1694342427461. The reversal of 1694342427457 is 7547242434961.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1636350081601 + 57992345856 = 1279199^2 + 240816^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1694342427457 is a prime.

It is a super-2 number, since 2×1694342427457² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1694342427467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 847171213728 + 847171213729.

It is an arithmetic number, because the mean of its divisors is an integer number (847171213729).

Almost surely, 2^{1694342427457} is an apocalyptic number.

It is an amenable number.

1694342427457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1694342427457 is an equidigital number, since it uses as much as digits as its factorization.

1694342427457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40642560, while the sum is 58.

The spelling of 1694342427457 in words is "one trillion, six hundred ninety-four billion, three hundred forty-two million, four hundred twenty-seven thousand, four hundred fifty-seven".