168161429 has 2 divisors, whose sum is σ = 168161430. Its totient is φ = 168161428.

The previous prime is 168161369. The next prime is 168161447. The reversal of 168161429 is 924161861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 142253329 + 25908100 = 11927^2 + 5090^2 .

It is a cyclic number.

It is not a de Polignac number, because 168161429 - 2⁸ = 168161173 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 168161392 and 168161401.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168161029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84080714 + 84080715.

It is an arithmetic number, because the mean of its divisors is an integer number (84080715).

Almost surely, 2^168161429 is an apocalyptic number.

It is an amenable number.

168161429 is a deficient number, since it is larger than the sum of its proper divisors (1).

168161429 is an equidigital number, since it uses as much as digits as its factorization.

168161429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20736, while the sum is 38.

The square root of 168161429 is about 12967.7071604814. The cubic root of 168161429 is about 551.9615129734.

The spelling of 168161429 in words is "one hundred sixty-eight million, one hundred sixty-one thousand, four hundred twenty-nine".