168922357 has 2 divisors, whose sum is σ = 168922358. Its totient is φ = 168922356.

The previous prime is 168922349. The next prime is 168922367. The reversal of 168922357 is 753229861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 102434641 + 66487716 = 10121^2 + 8154^2 .

It is a cyclic number.

It is not a de Polignac number, because 168922357 - 2³ = 168922349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168922367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84461178 + 84461179.

It is an arithmetic number, because the mean of its divisors is an integer number (84461179).

Almost surely, 2^168922357 is an apocalyptic number.

It is an amenable number.

168922357 is a deficient number, since it is larger than the sum of its proper divisors (1).

168922357 is an equidigital number, since it uses as much as digits as its factorization.

168922357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 181440, while the sum is 43.

The square root of 168922357 is about 12997.0133876980. The cubic root of 168922357 is about 552.7927996284.

The spelling of 168922357 in words is "one hundred sixty-eight million, nine hundred twenty-two thousand, three hundred fifty-seven".