163243441 has 4 divisors (see below), whose sum is σ = 163296112. Its totient is φ = 163190772.

The previous prime is 163243439. The next prime is 163243447. The reversal of 163243441 is 144342361.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 144342361 = 71 ⋅2032991.

It is a cyclic number.

It is not a de Polignac number, because 163243441 - 2¹ = 163243439 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163243447) 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, 21375 + ... + 27988.

It is an arithmetic number, because the mean of its divisors is an integer number (40824028).

Almost surely, 2^163243441 is an apocalyptic number.

It is an amenable number.

163243441 is a deficient number, since it is larger than the sum of its proper divisors (52671).

163243441 is an equidigital number, since it uses as much as digits as its factorization.

163243441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52670.

The product of its digits is 6912, while the sum is 28.

The square root of 163243441 is about 12776.6756630980. The cubic root of 163243441 is about 546.5273666403.

The spelling of 163243441 in words is "one hundred sixty-three million, two hundred forty-three thousand, four hundred forty-one".