168820343 has 2 divisors, whose sum is σ = 168820344. Its totient is φ = 168820342.

The previous prime is 168820313. The next prime is 168820349. The reversal of 168820343 is 343028861.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 168820343 - 2¹⁰ = 168819319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168820349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84410171 + 84410172.

It is an arithmetic number, because the mean of its divisors is an integer number (84410172).

Almost surely, 2^168820343 is an apocalyptic number.

168820343 is a deficient number, since it is larger than the sum of its proper divisors (1).

168820343 is an equidigital number, since it uses as much as digits as its factorization.

168820343 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 168820343 is about 12993.0882780038. The cubic root of 168820343 is about 552.6814980784.

The spelling of 168820343 in words is "one hundred sixty-eight million, eight hundred twenty thousand, three hundred forty-three".