163045305 has 20 divisors (see below), whose sum is σ = 292274532. Its totient is φ = 86957280.

The previous prime is 163045297. The next prime is 163045313. The reversal of 163045305 is 503540361.

It is an interprime number because it is at equal distance from previous prime (163045297) and next prime (163045313).

It can be written as a sum of positive squares in 2 ways, for example, as 125148969 + 37896336 = 11187^2 + 6156^2 .

It is not a de Polignac number, because 163045305 - 2³ = 163045297 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 200886 + ... + 201695.

Almost surely, 2^163045305 is an apocalyptic number.

163045305 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

163045305 is a deficient number, since it is larger than the sum of its proper divisors (129229227).

163045305 is an equidigital number, since it uses as much as digits as its factorization.

163045305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402598 (or 402589 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 163045305 is about 12768.9194922672. The cubic root of 163045305 is about 546.3061620678.

Adding to 163045305 its reverse (503540361), we get a palindrome (666585666).

It can be divided in two parts, 16304 and 5305, that added together give a square (21609 = 147²).

The spelling of 163045305 in words is "one hundred sixty-three million, forty-five thousand, three hundred five".