801518447 has 2 divisors, whose sum is σ = 801518448. Its totient is φ = 801518446.

The previous prime is 801518381. The next prime is 801518449. The reversal of 801518447 is 744815108.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 801518447 - 2¹⁴ = 801502063 is a prime.

Together with 801518449, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 801518447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (801518449) 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, 400759223 + 400759224.

It is an arithmetic number, because the mean of its divisors is an integer number (400759224).

Almost surely, 2^801518447 is an apocalyptic number.

801518447 is a deficient number, since it is larger than the sum of its proper divisors (1).

801518447 is an equidigital number, since it uses as much as digits as its factorization.

801518447 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 35840, while the sum is 38.

The square root of 801518447 is about 28311.1011265899. The cubic root of 801518447 is about 928.9047294025.

It can be divided in two parts, 8015 and 18447, that added together give a palindrome (26462).

The spelling of 801518447 in words is "eight hundred one million, five hundred eighteen thousand, four hundred forty-seven".