163530361 has 6 divisors (see below), whose sum is σ = 173715950. Its totient is φ = 153910656.

The previous prime is 163530277. The next prime is 163530371. The reversal of 163530361 is 163035361.

It can be written as a sum of positive squares in 3 ways, for example, as 55785961 + 107744400 = 7469^2 + 10380^2 .

It is not a de Polignac number, because 163530361 - 2⁷ = 163530233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (163530371) 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 5 ways as a sum of consecutive naturals, for example, 282636 + ... + 283213.

Almost surely, 2^163530361 is an apocalyptic number.

It is an amenable number.

163530361 is a deficient number, since it is larger than the sum of its proper divisors (10185589).

163530361 is an equidigital number, since it uses as much as digits as its factorization.

163530361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565883 (or 565866 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 28.

The square root of 163530361 is about 12787.8990064827. The cubic root of 163530361 is about 546.8473751096.

The spelling of 163530361 in words is "one hundred sixty-three million, five hundred thirty thousand, three hundred sixty-one".