819438332 has 12 divisors (see below), whose sum is σ = 1439598720. Its totient is φ = 408124416.

The previous prime is 819438329. The next prime is 819438337. The reversal of 819438332 is 233834918.

It is a self number, because there is not a number n which added to its sum of digits gives 819438332.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (819438337) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 397532 + ... + 399587.

It is an arithmetic number, because the mean of its divisors is an integer number (119966560).

Almost surely, 2^819438332 is an apocalyptic number.

It is an amenable number.

819438332 is a deficient number, since it is larger than the sum of its proper divisors (620160388).

819438332 is a wasteful number, since it uses less digits than its factorization.

819438332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797380 (or 797378 counting only the distinct ones).

The product of its digits is 124416, while the sum is 41.

The square root of 819438332 is about 28625.8332979147. The cubic root of 819438332 is about 935.7764079240.

The spelling of 819438332 in words is "eight hundred nineteen million, four hundred thirty-eight thousand, three hundred thirty-two".