812286819 has 8 divisors (see below), whose sum is σ = 1203387920. Its totient is φ = 541524528.

The previous prime is 812286817. The next prime is 812286847. The reversal of 812286819 is 918682218.

It is a happy number.

It is not a de Polignac number, because 812286819 - 2¹ = 812286817 is a prime.

It is a super-2 number, since 2×812286819² = 1319619752642277522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (812286817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15042322 + ... + 15042375.

It is an arithmetic number, because the mean of its divisors is an integer number (150423490).

Almost surely, 2^812286819 is an apocalyptic number.

812286819 is a deficient number, since it is larger than the sum of its proper divisors (391101101).

812286819 is a wasteful number, since it uses less digits than its factorization.

812286819 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30084706 (or 30084700 counting only the distinct ones).

The product of its digits is 110592, while the sum is 45.

The square root of 812286819 is about 28500.6459400484. The cubic root of 812286819 is about 933.0461717620.

The spelling of 812286819 in words is "eight hundred twelve million, two hundred eighty-six thousand, eight hundred nineteen".