194182161 has 4 divisors (see below), whose sum is σ = 258909552. Its totient is φ = 129454772.

The previous prime is 194182159. The next prime is 194182189. The reversal of 194182161 is 161281491.

194182161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 194182161 - 2¹ = 194182159 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (194182141) 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, 32363691 + ... + 32363696.

It is an arithmetic number, because the mean of its divisors is an integer number (64727388).

Almost surely, 2^194182161 is an apocalyptic number.

It is an amenable number.

194182161 is a deficient number, since it is larger than the sum of its proper divisors (64727391).

194182161 is an equidigital number, since it uses as much as digits as its factorization.

194182161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64727390.

The product of its digits is 3456, while the sum is 33.

The square root of 194182161 is about 13934.9259416762. The cubic root of 194182161 is about 579.0771700114.

The spelling of 194182161 in words is "one hundred ninety-four million, one hundred eighty-two thousand, one hundred sixty-one".