2168661343 has 2 divisors, whose sum is σ = 2168661344. Its totient is φ = 2168661342.

The previous prime is 2168661337. The next prime is 2168661361. The reversal of 2168661343 is 3431668612.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2168661343 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2168661296 and 2168661305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2168661043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1084330671 + 1084330672.

It is an arithmetic number, because the mean of its divisors is an integer number (1084330672).

Almost surely, 2^2168661343 is an apocalyptic number.

2168661343 is a deficient number, since it is larger than the sum of its proper divisors (1).

2168661343 is an equidigital number, since it uses as much as digits as its factorization.

2168661343 is an evil number, because the sum of its binary digits is even.

The product of its digits is 124416, while the sum is 40.

The square root of 2168661343 is about 46568.8881443395. Note that the first 3 decimals coincide. The cubic root of 2168661343 is about 1294.3863150727.

The spelling of 2168661343 in words is "two billion, one hundred sixty-eight million, six hundred sixty-one thousand, three hundred forty-three".