1686930794767 has 2 divisors, whose sum is σ = 1686930794768. Its totient is φ = 1686930794766.

The previous prime is 1686930794753. The next prime is 1686930794779. The reversal of 1686930794767 is 7674970396861.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1686930794767 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1686930794767.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1686930797767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 843465397383 + 843465397384.

It is an arithmetic number, because the mean of its divisors is an integer number (843465397384).

Almost surely, 2^{1686930794767} is an apocalyptic number.

1686930794767 is a deficient number, since it is larger than the sum of its proper divisors (1).

1686930794767 is an equidigital number, since it uses as much as digits as its factorization.

1686930794767 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576108288, while the sum is 73.

The spelling of 1686930794767 in words is "one trillion, six hundred eighty-six billion, nine hundred thirty million, seven hundred ninety-four thousand, seven hundred sixty-seven".