181084226 has 4 divisors (see below), whose sum is σ = 271626342. Its totient is φ = 90542112.

The previous prime is 181084181. The next prime is 181084247. The reversal of 181084226 is 622480181.

It is a happy number.

181084226 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 622480181 = 16607 ⋅37483.

It can be written as a sum of positive squares in only one way, i.e., 94575625 + 86508601 = 9725^2 + 9301^2 .

It is a junction number, because it is equal to n+sod(n) for n = 181084192 and 181084201.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45271055 + ... + 45271058.

Almost surely, 2^181084226 is an apocalyptic number.

181084226 is a deficient number, since it is larger than the sum of its proper divisors (90542116).

181084226 is an equidigital number, since it uses as much as digits as its factorization.

181084226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90542115.

The product of its (nonzero) digits is 6144, while the sum is 32.

The square root of 181084226 is about 13456.7539176430. The cubic root of 181084226 is about 565.7530106410.

The spelling of 181084226 in words is "one hundred eighty-one million, eighty-four thousand, two hundred twenty-six".