168350081 has 2 divisors, whose sum is σ = 168350082. Its totient is φ = 168350080.

The previous prime is 168350033. The next prime is 168350107. The reversal of 168350081 is 180053861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122855056 + 45495025 = 11084^2 + 6745^2 .

It is a cyclic number.

It is not a de Polignac number, because 168350081 - 2¹⁰ = 168349057 is a prime.

It is a super-2 number, since 2×168350081² = 56683499545413122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (168350011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84175040 + 84175041.

It is an arithmetic number, because the mean of its divisors is an integer number (84175041).

Almost surely, 2^168350081 is an apocalyptic number.

It is an amenable number.

168350081 is a deficient number, since it is larger than the sum of its proper divisors (1).

168350081 is an equidigital number, since it uses as much as digits as its factorization.

168350081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 168350081 is about 12974.9790365919. The cubic root of 168350081 is about 552.1678419540.

The spelling of 168350081 in words is "one hundred sixty-eight million, three hundred fifty thousand, eighty-one".