16382161 has 4 divisors (see below), whose sum is σ = 17244400. Its totient is φ = 15519924.

The previous prime is 16382159. The next prime is 16382173. The reversal of 16382161 is 16128361.

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: 16128361 = 163 ⋅98947.

It is a cyclic number.

It is not a de Polignac number, because 16382161 - 2¹ = 16382159 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16382131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 431091 + ... + 431128.

It is an arithmetic number, because the mean of its divisors is an integer number (4311100).

Almost surely, 2^16382161 is an apocalyptic number.

It is an amenable number.

16382161 is a deficient number, since it is larger than the sum of its proper divisors (862239).

16382161 is an equidigital number, since it uses as much as digits as its factorization.

16382161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862238.

The product of its digits is 1728, while the sum is 28.

The square root of 16382161 is about 4047.4882334604. The cubic root of 16382161 is about 253.9746652558.

The spelling of 16382161 in words is "sixteen million, three hundred eighty-two thousand, one hundred sixty-one".