819451122 has 16 divisors (see below), whose sum is σ = 1873031232. Its totient is φ = 234128880.

The previous prime is 819451109. The next prime is 819451151. The reversal of 819451122 is 221154918.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9755329 + ... + 9755412.

It is an arithmetic number, because the mean of its divisors is an integer number (117064452).

Almost surely, 2^819451122 is an apocalyptic number.

819451122 is an abundant number, since it is smaller than the sum of its proper divisors (1053580110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

819451122 is a wasteful number, since it uses less digits than its factorization.

819451122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19510753.

The product of its digits is 5760, while the sum is 33.

The square root of 819451122 is about 28626.0566966531. The cubic root of 819451122 is about 935.7812765100.

The spelling of 819451122 in words is "eight hundred nineteen million, four hundred fifty-one thousand, one hundred twenty-two".