328084181 has 2 divisors, whose sum is σ = 328084182. Its totient is φ = 328084180.

The previous prime is 328084157. The next prime is 328084187. The reversal of 328084181 is 181480823.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 269255281 + 58828900 = 16409^2 + 7670^2 .

It is a cyclic number.

It is not a de Polignac number, because 328084181 - 2⁶ = 328084117 is a prime.

It is a super-2 number, since 2×328084181² = 215278459644881522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (328084187) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 164042090 + 164042091.

It is an arithmetic number, because the mean of its divisors is an integer number (164042091).

Almost surely, 2^328084181 is an apocalyptic number.

It is an amenable number.

328084181 is a deficient number, since it is larger than the sum of its proper divisors (1).

328084181 is an equidigital number, since it uses as much as digits as its factorization.

328084181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12288, while the sum is 35.

The square root of 328084181 is about 18113.0941862510. The cubic root of 328084181 is about 689.7024418867.

The spelling of 328084181 in words is "three hundred twenty-eight million, eighty-four thousand, one hundred eighty-one".