2818393161293 has 2 divisors, whose sum is σ = 2818393161294. Its totient is φ = 2818393161292.

The previous prime is 2818393161223. The next prime is 2818393161377. The reversal of 2818393161293 is 3921613938182.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2198452667524 + 619940493769 = 1482718^2 + 787363^2 .

It is a cyclic number.

It is not a de Polignac number, because 2818393161293 - 2²⁰ = 2818392112717 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2818393161203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1409196580646 + 1409196580647.

It is an arithmetic number, because the mean of its divisors is an integer number (1409196580647).

Almost surely, 2^{2818393161293} is an apocalyptic number.

It is an amenable number.

2818393161293 is a deficient number, since it is larger than the sum of its proper divisors (1).

2818393161293 is an equidigital number, since it uses as much as digits as its factorization.

2818393161293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3359232, while the sum is 56.

The spelling of 2818393161293 in words is "two trillion, eight hundred eighteen billion, three hundred ninety-three million, one hundred sixty-one thousand, two hundred ninety-three".