163663169 has 4 divisors (see below), whose sum is σ = 172277040. Its totient is φ = 155049300.

The previous prime is 163663121. The next prime is 163663217. The reversal of 163663169 is 961366361.

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: 961366361 = 409 ⋅2350529.

It is an interprime number because it is at equal distance from previous prime (163663121) and next prime (163663217).

It is a cyclic number.

It is not a de Polignac number, because 163663169 - 2¹² = 163659073 is a prime.

It is a super-2 number, since 2×163663169² = 53571265774245122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163660169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4306907 + ... + 4306944.

It is an arithmetic number, because the mean of its divisors is an integer number (43069260).

Almost surely, 2^163663169 is an apocalyptic number.

163663169 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

163663169 is a deficient number, since it is larger than the sum of its proper divisors (8613871).

163663169 is an equidigital number, since it uses as much as digits as its factorization.

163663169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8613870.

The product of its digits is 104976, while the sum is 41.

The square root of 163663169 is about 12793.0906742663. The cubic root of 163663169 is about 546.9953722034.

The spelling of 163663169 in words is "one hundred sixty-three million, six hundred sixty-three thousand, one hundred sixty-nine".