168445226 has 4 divisors (see below), whose sum is σ = 252667842. Its totient is φ = 84222612.

The previous prime is 168445117. The next prime is 168445259. The reversal of 168445226 is 622544861.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 162690025 + 5755201 = 12755^2 + 2399^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 168445226.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42111305 + ... + 42111308.

Almost surely, 2^168445226 is an apocalyptic number.

168445226 is a deficient number, since it is larger than the sum of its proper divisors (84222616).

168445226 is an equidigital number, since it uses as much as digits as its factorization.

168445226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84222615.

The product of its digits is 92160, while the sum is 38.

The square root of 168445226 is about 12978.6449986121. The cubic root of 168445226 is about 552.2718437163.

The spelling of 168445226 in words is "one hundred sixty-eight million, four hundred forty-five thousand, two hundred twenty-six".