181327422 has 16 divisors (see below), whose sum is σ = 362832912. Its totient is φ = 60412800.

The previous prime is 181327411. The next prime is 181327493. The reversal of 181327422 is 224723181.

It is a self number, because there is not a number n which added to its sum of digits gives 181327422.

It is a congruent number.

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, 8422 + ... + 20822.

It is an arithmetic number, because the mean of its divisors is an integer number (22677057).

Almost surely, 2^181327422 is an apocalyptic number.

181327422 is an abundant number, since it is smaller than the sum of its proper divisors (181505490).

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

181327422 is a wasteful number, since it uses less digits than its factorization.

181327422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14843.

The product of its digits is 5376, while the sum is 30.

The square root of 181327422 is about 13465.7870917373. The cubic root of 181327422 is about 566.0061659898.

The spelling of 181327422 in words is "one hundred eighty-one million, three hundred twenty-seven thousand, four hundred twenty-two".