16163161 has 4 divisors (see below), whose sum is σ = 18472192. Its totient is φ = 13854132.

The previous prime is 16163137. The next prime is 16163177. The reversal of 16163161 is 16136161.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16136161 = 3361 ⋅4801.

It is a cyclic number.

It is not a de Polignac number, because 16163161 - 2⁷ = 16163033 is a prime.

It is a super-2 number, since 2×16163161² = 522495547023842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16163101) 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, 1154505 + ... + 1154518.

It is an arithmetic number, because the mean of its divisors is an integer number (4618048).

Almost surely, 2^16163161 is an apocalyptic number.

It is an amenable number.

16163161 is a deficient number, since it is larger than the sum of its proper divisors (2309031).

16163161 is an equidigital number, since it uses as much as digits as its factorization.

16163161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2309030.

The product of its digits is 648, while the sum is 25.

The square root of 16163161 is about 4020.3433932937. The cubic root of 16163161 is about 252.8378563938.

Subtracting from 16163161 its reverse (16136161), we obtain a cube (27000 = 30³).

The spelling of 16163161 in words is "sixteen million, one hundred sixty-three thousand, one hundred sixty-one".