326644161 has 4 divisors (see below), whose sum is σ = 435525552. Its totient is φ = 217762772.

The previous prime is 326644111. The next prime is 326644163. The reversal of 326644161 is 161446623.

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 326644161 - 2¹⁵ = 326611393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (326644163) 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, 54440691 + ... + 54440696.

It is an arithmetic number, because the mean of its divisors is an integer number (108881388).

Almost surely, 2^326644161 is an apocalyptic number.

It is an amenable number.

326644161 is a deficient number, since it is larger than the sum of its proper divisors (108881391).

326644161 is a wasteful number, since it uses less digits than its factorization.

326644161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108881390.

The product of its digits is 20736, while the sum is 33.

The square root of 326644161 is about 18073.2996710617. The cubic root of 326644161 is about 688.6918862521.

The spelling of 326644161 in words is "three hundred twenty-six million, six hundred forty-four thousand, one hundred sixty-one".