168883144 has 8 divisors (see below), whose sum is σ = 316655910. Its totient is φ = 84441568.

The previous prime is 168883139. The next prime is 168883147. The reversal of 168883144 is 441388861.

It can be written as a sum of positive squares in only one way, i.e., 113678244 + 55204900 = 10662^2 + 7430^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 168883144.

It is not an unprimeable number, because it can be changed into a prime (168883147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10555189 + ... + 10555204.

Almost surely, 2^168883144 is an apocalyptic number.

It is an amenable number.

168883144 is a deficient number, since it is larger than the sum of its proper divisors (147772766).

168883144 is a wasteful number, since it uses less digits than its factorization.

168883144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21110399 (or 21110395 counting only the distinct ones).

The product of its digits is 147456, while the sum is 43.

The square root of 168883144 is about 12995.5047612626. The cubic root of 168883144 is about 552.7500219051.

The spelling of 168883144 in words is "one hundred sixty-eight million, eight hundred eighty-three thousand, one hundred forty-four".