803818663 has 2 divisors, whose sum is σ = 803818664. Its totient is φ = 803818662.

The previous prime is 803818661. The next prime is 803818669. The reversal of 803818663 is 366818308.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 803818663 - 2¹ = 803818661 is a prime.

It is a super-2 number, since 2×803818663² = 1292248885974215138, which contains 22 as substring.

Together with 803818661, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (803818661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 401909331 + 401909332.

It is an arithmetic number, because the mean of its divisors is an integer number (401909332).

Almost surely, 2^803818663 is an apocalyptic number.

803818663 is a deficient number, since it is larger than the sum of its proper divisors (1).

803818663 is an equidigital number, since it uses as much as digits as its factorization.

803818663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 803818663 is about 28351.6959457455. The cubic root of 803818663 is about 929.7924780732.

The spelling of 803818663 in words is "eight hundred three million, eight hundred eighteen thousand, six hundred sixty-three".