161188429 has 2 divisors, whose sum is σ = 161188430. Its totient is φ = 161188428.

The previous prime is 161188411. The next prime is 161188481. The reversal of 161188429 is 924881161.

161188429 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., 132779529 + 28408900 = 11523^2 + 5330^2 .

It is a cyclic number.

It is not a de Polignac number, because 161188429 - 2¹¹ = 161186381 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 161188391 and 161188400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161188129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80594214 + 80594215.

It is an arithmetic number, because the mean of its divisors is an integer number (80594215).

Almost surely, 2^161188429 is an apocalyptic number.

It is an amenable number.

161188429 is a deficient number, since it is larger than the sum of its proper divisors (1).

161188429 is an equidigital number, since it uses as much as digits as its factorization.

161188429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27648, while the sum is 40.

The square root of 161188429 is about 12696.0005119723. Note that the first 3 decimals coincide. The cubic root of 161188429 is about 544.2243310032.

The spelling of 161188429 in words is "one hundred sixty-one million, one hundred eighty-eight thousand, four hundred twenty-nine".