16630161 has 4 divisors (see below), whose sum is σ = 22173552. Its totient is φ = 11086772.

The previous prime is 16630157. The next prime is 16630169. The reversal of 16630161 is 16103661.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16630161 - 2² = 16630157 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16630169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2771691 + ... + 2771696.

It is an arithmetic number, because the mean of its divisors is an integer number (5543388).

Almost surely, 2^16630161 is an apocalyptic number.

It is an amenable number.

16630161 is a deficient number, since it is larger than the sum of its proper divisors (5543391).

16630161 is an equidigital number, since it uses as much as digits as its factorization.

16630161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5543390.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 16630161 is about 4078.0094408915. The cubic root of 16630161 is about 255.2498435562.

The spelling of 16630161 in words is "sixteen million, six hundred thirty thousand, one hundred sixty-one".