181814429 has 2 divisors, whose sum is σ = 181814430. Its totient is φ = 181814428.

The previous prime is 181814407. The next prime is 181814453. The reversal of 181814429 is 924418181.

181814429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 181629529 + 184900 = 13477^2 + 430^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-181814429 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 181814392 and 181814401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (181814029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90907214 + 90907215.

It is an arithmetic number, because the mean of its divisors is an integer number (90907215).

Almost surely, 2^181814429 is an apocalyptic number.

It is an amenable number.

181814429 is a deficient number, since it is larger than the sum of its proper divisors (1).

181814429 is an equidigital number, since it uses as much as digits as its factorization.

181814429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18432, while the sum is 38.

The square root of 181814429 is about 13483.8580903241. The cubic root of 181814429 is about 566.5124371891.

The spelling of 181814429 in words is "one hundred eighty-one million, eight hundred fourteen thousand, four hundred twenty-nine".