163361443 has 6 divisors (see below), whose sum is σ = 190032756. Its totient is φ = 140024052.

The previous prime is 163361417. The next prime is 163361453. The reversal of 163361443 is 344163361.

It is a happy number.

It is not a de Polignac number, because 163361443 - 2²¹ = 161264291 is a prime.

It is a super-2 number, since 2×163361443² = 53373922118084498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163361453) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1666905 + ... + 1667002.

It is an arithmetic number, because the mean of its divisors is an integer number (31672126).

Almost surely, 2^163361443 is an apocalyptic number.

163361443 is a deficient number, since it is larger than the sum of its proper divisors (26671313).

163361443 is an equidigital number, since it uses as much as digits as its factorization.

163361443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3333921 (or 3333914 counting only the distinct ones).

The product of its digits is 15552, while the sum is 31.

The square root of 163361443 is about 12781.2926967502. The cubic root of 163361443 is about 546.6590223417.

The spelling of 163361443 in words is "one hundred sixty-three million, three hundred sixty-one thousand, four hundred forty-three".