326603161 has 2 divisors, whose sum is σ = 326603162. Its totient is φ = 326603160.

The previous prime is 326603153. The next prime is 326603203. The reversal of 326603161 is 161306623.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 294465600 + 32137561 = 17160^2 + 5669^2 .

It is a cyclic number.

It is not a de Polignac number, because 326603161 - 2³ = 326603153 is a prime.

It is equal to p_17612263 and since 326603161 and 17612263 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (326603111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163301580 + 163301581.

It is an arithmetic number, because the mean of its divisors is an integer number (163301581).

Almost surely, 2^326603161 is an apocalyptic number.

It is an amenable number.

326603161 is a deficient number, since it is larger than the sum of its proper divisors (1).

326603161 is an equidigital number, since it uses as much as digits as its factorization.

326603161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 326603161 is about 18072.1653655559. The cubic root of 326603161 is about 688.6630704416.

Adding to 326603161 its reverse (161306623), we get a palindrome (487909784).

The spelling of 326603161 in words is "three hundred twenty-six million, six hundred three thousand, one hundred sixty-one".