168016826 has 4 divisors (see below), whose sum is σ = 252025242. Its totient is φ = 84008412.

The previous prime is 168016813. The next prime is 168016853. The reversal of 168016826 is 628610861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 628610861 = 23 ⋅27330907.

It can be written as a sum of positive squares in only one way, i.e., 101022601 + 66994225 = 10051^2 + 8185^2 .

It is a super-2 number, since 2×168016826² = 56459307638228552, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 168016826.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42004205 + ... + 42004208.

Almost surely, 2^168016826 is an apocalyptic number.

168016826 is a deficient number, since it is larger than the sum of its proper divisors (84008416).

168016826 is an equidigital number, since it uses as much as digits as its factorization.

168016826 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84008415.

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 168016826 is about 12962.1304576061. The cubic root of 168016826 is about 551.8032559542.

The spelling of 168016826 in words is "one hundred sixty-eight million, sixteen thousand, eight hundred twenty-six".