802805851 has 2 divisors, whose sum is σ = 802805852. Its totient is φ = 802805850.

The previous prime is 802805833. The next prime is 802805863. The reversal of 802805851 is 158508208.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 802805851 - 2²³ = 794417243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 802805851.

It is not a weakly prime, because it can be changed into another prime (802805831) 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, 401402925 + 401402926.

It is an arithmetic number, because the mean of its divisors is an integer number (401402926).

Almost surely, 2^802805851 is an apocalyptic number.

802805851 is a deficient number, since it is larger than the sum of its proper divisors (1).

802805851 is an equidigital number, since it uses as much as digits as its factorization.

802805851 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25600, while the sum is 37.

The square root of 802805851 is about 28333.8287388062. The cubic root of 802805851 is about 929.4018009151.

The spelling of 802805851 in words is "eight hundred two million, eight hundred five thousand, eight hundred fifty-one".