1648727664193 has 2 divisors, whose sum is σ = 1648727664194. Its totient is φ = 1648727664192.

The previous prime is 1648727664169. The next prime is 1648727664257. The reversal of 1648727664193 is 3914667278461.

It is an a-pointer prime, because the next prime (1648727664257) can be obtained adding 1648727664193 to its sum of digits (64).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1024411185424 + 624316478769 = 1012132^2 + 790137^2 .

It is a cyclic number.

It is not a de Polignac number, because 1648727664193 - 2¹³ = 1648727656001 is a prime.

It is not a weakly prime, because it can be changed into another prime (1648727664113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 824363832096 + 824363832097.

It is an arithmetic number, because the mean of its divisors is an integer number (824363832097).

Almost surely, 2^{1648727664193} is an apocalyptic number.

It is an amenable number.

1648727664193 is a deficient number, since it is larger than the sum of its proper divisors (1).

1648727664193 is an equidigital number, since it uses as much as digits as its factorization.

1648727664193 is an evil number, because the sum of its binary digits is even.

The product of its digits is 73156608, while the sum is 64.

The spelling of 1648727664193 in words is "one trillion, six hundred forty-eight billion, seven hundred twenty-seven million, six hundred sixty-four thousand, one hundred ninety-three".