163546423 has 4 divisors (see below), whose sum is σ = 164644200. Its totient is φ = 162448648.

The previous prime is 163546373. The next prime is 163546451. The reversal of 163546423 is 324645361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 324645361 = 31 ⋅10472431.

It is a cyclic number.

It is not a de Polignac number, because 163546423 - 2⁹ = 163545911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163540423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 548665 + ... + 548962.

It is an arithmetic number, because the mean of its divisors is an integer number (41161050).

Almost surely, 2^163546423 is an apocalyptic number.

163546423 is a deficient number, since it is larger than the sum of its proper divisors (1097777).

163546423 is a wasteful number, since it uses less digits than its factorization.

163546423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097776.

The product of its digits is 51840, while the sum is 34.

The square root of 163546423 is about 12788.5270066572. The cubic root of 163546423 is about 546.8652783600.

The spelling of 163546423 in words is "one hundred sixty-three million, five hundred forty-six thousand, four hundred twenty-three".