326195381 has 2 divisors, whose sum is σ = 326195382. Its totient is φ = 326195380.

The previous prime is 326195351. The next prime is 326195411. The reversal of 326195381 is 183591623.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (326195351) and next prime (326195411).

It can be written as a sum of positive squares in only one way, i.e., 325225156 + 970225 = 18034^2 + 985^2 .

It is a cyclic number.

It is not a de Polignac number, because 326195381 - 2¹⁰ = 326194357 is a prime.

It is a super-2 number, since 2×326195381² = 212806853171470322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (326195321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163097690 + 163097691.

It is an arithmetic number, because the mean of its divisors is an integer number (163097691).

Almost surely, 2^326195381 is an apocalyptic number.

It is an amenable number.

326195381 is a deficient number, since it is larger than the sum of its proper divisors (1).

326195381 is an equidigital number, since it uses as much as digits as its factorization.

326195381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 38.

The square root of 326195381 is about 18060.8798512143. The cubic root of 326195381 is about 688.3763412492.

The spelling of 326195381 in words is "three hundred twenty-six million, one hundred ninety-five thousand, three hundred eighty-one".