181044868 has 24 divisors (see below), whose sum is σ = 334333440. Its totient is φ = 85609920.

The previous prime is 181044833. The next prime is 181044869. The reversal of 181044868 is 868440181.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 181044868.

It is not an unprimeable number, because it can be changed into a prime (181044869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2868 + ... + 19243.

It is an arithmetic number, because the mean of its divisors is an integer number (13930560).

Almost surely, 2^181044868 is an apocalyptic number.

It is an amenable number.

181044868 is a deficient number, since it is larger than the sum of its proper divisors (153288572).

181044868 is a wasteful number, since it uses less digits than its factorization.

181044868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22227 (or 22225 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 40.

The square root of 181044868 is about 13455.2914498349. The cubic root of 181044868 is about 565.7120195492.

The spelling of 181044868 in words is "one hundred eighty-one million, forty-four thousand, eight hundred sixty-eight".