168259849 has 2 divisors, whose sum is σ = 168259850. Its totient is φ = 168259848.

The previous prime is 168259843. The next prime is 168259879. The reversal of 168259849 is 948952861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 99900025 + 68359824 = 9995^2 + 8268^2 .

It is a cyclic number.

It is not a de Polignac number, because 168259849 - 2⁹ = 168259337 is a prime.

It is a super-2 number, since 2×168259849² = 56622753571005602, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 168259796 and 168259805.

It is not a weakly prime, because it can be changed into another prime (168259843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84129924 + 84129925.

It is an arithmetic number, because the mean of its divisors is an integer number (84129925).

Almost surely, 2^168259849 is an apocalyptic number.

It is an amenable number.

168259849 is a deficient number, since it is larger than the sum of its proper divisors (1).

168259849 is an equidigital number, since it uses as much as digits as its factorization.

168259849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1244160, while the sum is 52.

The square root of 168259849 is about 12971.5014165670. The cubic root of 168259849 is about 552.0691743195.

The spelling of 168259849 in words is "one hundred sixty-eight million, two hundred fifty-nine thousand, eight hundred forty-nine".