168881648 has 20 divisors (see below), whose sum is σ = 352378488. Its totient is φ = 77945280.

The previous prime is 168881641. The next prime is 168881651. The reversal of 168881648 is 846188861.

It is a super-2 number, since 2×168881648² = 57042022062391808, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 168881596 and 168881605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168881641) 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 3 ways as a sum of consecutive naturals, for example, 405758 + ... + 406173.

Almost surely, 2^168881648 is an apocalyptic number.

It is an amenable number.

168881648 is an abundant number, since it is smaller than the sum of its proper divisors (183496840).

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

168881648 is a wasteful number, since it uses less digits than its factorization.

168881648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 811952 (or 811946 counting only the distinct ones).

The product of its digits is 589824, while the sum is 50.

The square root of 168881648 is about 12995.4472027707. The cubic root of 168881648 is about 552.7483897775.

The spelling of 168881648 in words is "one hundred sixty-eight million, eight hundred eighty-one thousand, six hundred forty-eight".