161746423 has 2 divisors, whose sum is σ = 161746424. Its totient is φ = 161746422.

The previous prime is 161746399. The next prime is 161746439. The reversal of 161746423 is 324647161.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 161746423 - 2⁵ = 161746391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (161744423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 80873211 + 80873212.

It is an arithmetic number, because the mean of its divisors is an integer number (80873212).

Almost surely, 2^161746423 is an apocalyptic number.

161746423 is a deficient number, since it is larger than the sum of its proper divisors (1).

161746423 is an equidigital number, since it uses as much as digits as its factorization.

161746423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 34.

The square root of 161746423 is about 12717.9567148186. The cubic root of 161746423 is about 544.8515972225.

The spelling of 161746423 in words is "one hundred sixty-one million, seven hundred forty-six thousand, four hundred twenty-three".