165630353 has 16 divisors (see below), whose sum is σ = 203022720. Its totient is φ = 131953536.

The previous prime is 165630349. The next prime is 165630449. The reversal of 165630353 is 353036561.

It is a cyclic number.

It is not a de Polignac number, because 165630353 - 2² = 165630349 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (165630653) 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, 4700 + ... + 18797.

It is an arithmetic number, because the mean of its divisors is an integer number (12688920).

Almost surely, 2^165630353 is an apocalyptic number.

It is an amenable number.

165630353 is a deficient number, since it is larger than the sum of its proper divisors (37392367).

165630353 is a wasteful number, since it uses less digits than its factorization.

165630353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23576.

The product of its (nonzero) digits is 24300, while the sum is 32.

The square root of 165630353 is about 12869.7456462822. The cubic root of 165630353 is about 549.1782251095.

The spelling of 165630353 in words is "one hundred sixty-five million, six hundred thirty thousand, three hundred fifty-three".