181144422 has 24 divisors (see below), whose sum is σ = 392729376. Its totient is φ = 60343056.

The previous prime is 181144417. The next prime is 181144451. The reversal of 181144422 is 224441181.

181144422 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 47988 + ... + 51624.

It is an arithmetic number, because the mean of its divisors is an integer number (16363724).

Almost surely, 2^181144422 is an apocalyptic number.

181144422 is an abundant number, since it is smaller than the sum of its proper divisors (211584954).

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

181144422 is a wasteful number, since it uses less digits than its factorization.

181144422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6412 (or 6409 counting only the distinct ones).

The product of its digits is 2048, while the sum is 27.

The square root of 181144422 is about 13458.9903781822. The cubic root of 181144422 is about 565.8156928820.

It can be divided in two parts, 18114 and 4422, that multiplied together give a palindrome (80100108).

The spelling of 181144422 in words is "one hundred eighty-one million, one hundred forty-four thousand, four hundred twenty-two".