163594945 has 16 divisors (see below), whose sum is σ = 208578960. Its totient is φ = 122943744.

The previous prime is 163594943. The next prime is 163594969. The reversal of 163594945 is 549495361.

It can be written as a sum of positive squares in 8 ways, for example, as 1567504 + 162027441 = 1252^2 + 12729^2 .

It is a cyclic number.

It is not a de Polignac number, because 163594945 - 2¹ = 163594943 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 163594895 and 163594904.

It is not an unprimeable number, because it can be changed into a prime (163594943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9882 + ... + 20611.

It is an arithmetic number, because the mean of its divisors is an integer number (13036185).

Almost surely, 2^163594945 is an apocalyptic number.

It is an amenable number.

163594945 is a deficient number, since it is larger than the sum of its proper divisors (44984015).

163594945 is a wasteful number, since it uses less digits than its factorization.

163594945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30564.

The product of its digits is 583200, while the sum is 46.

The square root of 163594945 is about 12790.4239570078. The cubic root of 163594945 is about 546.9193555098.

It can be divided in two parts, 1635 and 94945, that added together give a triangular number (96580 = T₄₃₉).

The spelling of 163594945 in words is "one hundred sixty-three million, five hundred ninety-four thousand, nine hundred forty-five".