168512229 has 12 divisors (see below), whose sum is σ = 243519276. Its totient is φ = 112289472.

The previous prime is 168512221. The next prime is 168512263. The reversal of 168512229 is 922215861.

It can be written as a sum of positive squares in 2 ways, for example, as 15000129 + 153512100 = 3873^2 + 12390^2 .

It is not a de Polignac number, because 168512229 - 2³ = 168512221 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 168512193 and 168512202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168512221) 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 in 11 ways as a sum of consecutive naturals, for example, 34359 + ... + 38955.

It is an arithmetic number, because the mean of its divisors is an integer number (20293273).

Almost surely, 2^168512229 is an apocalyptic number.

It is an amenable number.

168512229 is a deficient number, since it is larger than the sum of its proper divisors (75007047).

168512229 is a wasteful number, since it uses less digits than its factorization.

168512229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8676 (or 8673 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 168512229 is about 12981.2260206808. The cubic root of 168512229 is about 552.3450603258.

The spelling of 168512229 in words is "one hundred sixty-eight million, five hundred twelve thousand, two hundred twenty-nine".