181046429 has 2 divisors, whose sum is σ = 181046430. Its totient is φ = 181046428.

The previous prime is 181046423. The next prime is 181046431. The reversal of 181046429 is 924640181.

It is a happy number.

181046429 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 160706329 + 20340100 = 12677^2 + 4510^2 .

It is a cyclic number.

It is not a de Polignac number, because 181046429 - 2¹⁶ = 180980893 is a prime.

It is a Sophie Germain prime.

Together with 181046431, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (181046423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90523214 + 90523215.

It is an arithmetic number, because the mean of its divisors is an integer number (90523215).

Almost surely, 2^181046429 is an apocalyptic number.

It is an amenable number.

181046429 is a deficient number, since it is larger than the sum of its proper divisors (1).

181046429 is an equidigital number, since it uses as much as digits as its factorization.

181046429 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13824, while the sum is 35.

The square root of 181046429 is about 13455.3494566288. The cubic root of 181046429 is about 565.7136454333.

The spelling of 181046429 in words is "one hundred eighty-one million, forty-six thousand, four hundred twenty-nine".