166316226 has 16 divisors (see below), whose sum is σ = 338909184. Its totient is φ = 54392624.

The previous prime is 166316167. The next prime is 166316231. The reversal of 166316226 is 622613661.

It is a super-2 number, since 2×166316226² = 55322174061766152, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a Curzon number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 261186 + ... + 261821.

It is an arithmetic number, because the mean of its divisors is an integer number (21181824).

Almost surely, 2^166316226 is an apocalyptic number.

166316226 is an abundant number, since it is smaller than the sum of its proper divisors (172592958).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

166316226 is a wasteful number, since it uses less digits than its factorization.

166316226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 523065.

The product of its digits is 15552, while the sum is 33.

The square root of 166316226 is about 12896.3648366507. The cubic root of 166316226 is about 549.9352276339.

Adding to 166316226 its reverse (622613661), we get a palindrome (788929887).

The spelling of 166316226 in words is "one hundred sixty-six million, three hundred sixteen thousand, two hundred twenty-six".