1793040163861 has 2 divisors, whose sum is σ = 1793040163862. Its totient is φ = 1793040163860.

The previous prime is 1793040163813. The next prime is 1793040163891. The reversal of 1793040163861 is 1683610403971.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1684868900625 + 108171263236 = 1298025^2 + 328894^2 .

It is a cyclic number.

It is not a de Polignac number, because 1793040163861 - 2⁹ = 1793040163349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1793040163891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 896520081930 + 896520081931.

It is an arithmetic number, because the mean of its divisors is an integer number (896520081931).

Almost surely, 2^{1793040163861} is an apocalyptic number.

It is an amenable number.

1793040163861 is a deficient number, since it is larger than the sum of its proper divisors (1).

1793040163861 is an equidigital number, since it uses as much as digits as its factorization.

1793040163861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 653184, while the sum is 49.

The spelling of 1793040163861 in words is "one trillion, seven hundred ninety-three billion, forty million, one hundred sixty-three thousand, eight hundred sixty-one".