382328981 has 2 divisors, whose sum is σ = 382328982. Its totient is φ = 382328980.

The previous prime is 382328941. The next prime is 382328993. The reversal of 382328981 is 189823283.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 314530225 + 67798756 = 17735^2 + 8234^2 .

It is a cyclic number.

It is not a de Polignac number, because 382328981 - 2⁶ = 382328917 is a prime.

It is a super-2 number, since 2×382328981² = 292350899424996722, 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 (382328911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191164490 + 191164491.

It is an arithmetic number, because the mean of its divisors is an integer number (191164491).

Almost surely, 2^382328981 is an apocalyptic number.

It is an amenable number.

382328981 is a deficient number, since it is larger than the sum of its proper divisors (1).

382328981 is an equidigital number, since it uses as much as digits as its factorization.

382328981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 44.

The square root of 382328981 is about 19553.2345406073. The cubic root of 382328981 is about 725.7923835950.

The spelling of 382328981 in words is "three hundred eighty-two million, three hundred twenty-eight thousand, nine hundred eighty-one".