181368044 has 24 divisors (see below), whose sum is σ = 372883728. Its totient is φ = 76098240.

The previous prime is 181368029. The next prime is 181368071. The reversal of 181368044 is 440863181.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 181367995 and 181368013.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 157967 + ... + 159110.

It is an arithmetic number, because the mean of its divisors is an integer number (15536822).

Almost surely, 2^181368044 is an apocalyptic number.

It is an amenable number.

181368044 is an abundant number, since it is smaller than the sum of its proper divisors (191515684).

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

181368044 is a wasteful number, since it uses less digits than its factorization.

181368044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317105 (or 317103 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 181368044 is about 13467.2953483615. The cubic root of 181368044 is about 566.0484294736.

The spelling of 181368044 in words is "one hundred eighty-one million, three hundred sixty-eight thousand, forty-four".