326180381 has 2 divisors, whose sum is σ = 326180382. Its totient is φ = 326180380.

The previous prime is 326180317. The next prime is 326180383. The reversal of 326180381 is 183081623.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 326127481 + 52900 = 18059^2 + 230^2 .

It is an emirp because it is prime and its reverse (183081623) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 326180381 - 2⁶ = 326180317 is a prime.

It is a super-2 number, since 2×326180381² = 212787281898610322, which contains 22 as substring.

Together with 326180383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (326180383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163090190 + 163090191.

It is an arithmetic number, because the mean of its divisors is an integer number (163090191).

Almost surely, 2^326180381 is an apocalyptic number.

It is an amenable number.

326180381 is a deficient number, since it is larger than the sum of its proper divisors (1).

326180381 is an equidigital number, since it uses as much as digits as its factorization.

326180381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 326180381 is about 18060.4645842791. The cubic root of 326180381 is about 688.3657894919.

The spelling of 326180381 in words is "three hundred twenty-six million, one hundred eighty thousand, three hundred eighty-one".