168958397 has 2 divisors, whose sum is σ = 168958398. Its totient is φ = 168958396.

The previous prime is 168958381. The next prime is 168958441. The reversal of 168958397 is 793859861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 148986436 + 19971961 = 12206^2 + 4469^2 .

It is a cyclic number.

It is not a de Polignac number, because 168958397 - 2⁴ = 168958381 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168958337) 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, 84479198 + 84479199.

It is an arithmetic number, because the mean of its divisors is an integer number (84479199).

Almost surely, 2^168958397 is an apocalyptic number.

It is an amenable number.

168958397 is a deficient number, since it is larger than the sum of its proper divisors (1).

168958397 is an equidigital number, since it uses as much as digits as its factorization.

168958397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3265920, while the sum is 56.

The square root of 168958397 is about 12998.3997861275. The cubic root of 168958397 is about 552.8321100670.

The spelling of 168958397 in words is "one hundred sixty-eight million, nine hundred fifty-eight thousand, three hundred ninety-seven".