163426443 has 4 divisors (see below), whose sum is σ = 217901928. Its totient is φ = 108950960.

The previous prime is 163426441. The next prime is 163426469. The reversal of 163426443 is 344624361.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 344624361 = 3 ⋅114874787.

It is a cyclic number.

It is not a de Polignac number, because 163426443 - 2¹ = 163426441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (163426441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27237738 + ... + 27237743.

It is an arithmetic number, because the mean of its divisors is an integer number (54475482).

Almost surely, 2^163426443 is an apocalyptic number.

163426443 is a deficient number, since it is larger than the sum of its proper divisors (54475485).

163426443 is an equidigital number, since it uses as much as digits as its factorization.

163426443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54475484.

The product of its digits is 41472, while the sum is 33.

The square root of 163426443 is about 12783.8352226552. The cubic root of 163426443 is about 546.7315162426.

The spelling of 163426443 in words is "one hundred sixty-three million, four hundred twenty-six thousand, four hundred forty-three".