817452819 has 6 divisors (see below), whose sum is σ = 1180765196. Its totient is φ = 544968540.

The previous prime is 817452817. The next prime is 817452829. The reversal of 817452819 is 918254718.

817452819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 817452819 - 2¹ = 817452817 is a prime.

It is a super-2 number, since 2×817452819² = 1336458222582093522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (817452817) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 45414037 + ... + 45414054.

Almost surely, 2^817452819 is an apocalyptic number.

817452819 is a deficient number, since it is larger than the sum of its proper divisors (363312377).

817452819 is a wasteful number, since it uses less digits than its factorization.

817452819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90828097 (or 90828094 counting only the distinct ones).

The product of its digits is 161280, while the sum is 45.

The square root of 817452819 is about 28591.1318243962. The cubic root of 817452819 is about 935.0199959501.

It can be divided in two parts, 81 and 7452819, that added together give a square (7452900 = 2730²).

The spelling of 817452819 in words is "eight hundred seventeen million, four hundred fifty-two thousand, eight hundred nineteen".