803005381 has 2 divisors, whose sum is σ = 803005382. Its totient is φ = 803005380.

The previous prime is 803005373. The next prime is 803005391. The reversal of 803005381 is 183500308.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 605602881 + 197402500 = 24609^2 + 14050^2 .

It is a cyclic number.

It is not a de Polignac number, because 803005381 - 2³ = 803005373 is a prime.

It is a super-2 number, since 2×803005381² = 1289635283829910322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (803005321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 401502690 + 401502691.

It is an arithmetic number, because the mean of its divisors is an integer number (401502691).

Almost surely, 2^803005381 is an apocalyptic number.

It is an amenable number.

803005381 is a deficient number, since it is larger than the sum of its proper divisors (1).

803005381 is an equidigital number, since it uses as much as digits as its factorization.

803005381 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 803005381 is about 28337.3495761336. The cubic root of 803005381 is about 929.4787926227.

Adding to 803005381 its reverse (183500308), we get a palindrome (986505689).

The spelling of 803005381 in words is "eight hundred three million, five thousand, three hundred eighty-one".