819378 has 36 divisors (see below), whose sum is σ = 2067390. Its totient is φ = 233856.

The previous prime is 819373. The next prime is 819389. The reversal of 819378 is 873918.

It can be written as a sum of positive squares in only one way, i.e., 815409 + 3969 = 903^2 + 63^2 .

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 819378.

It is not an unprimeable number, because it can be changed into a prime (819373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 418 + ... + 1346.

2⁸¹⁹³⁷⁸ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 819378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1033695).

819378 is an abundant number, since it is smaller than the sum of its proper divisors (1248012).

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

819378 is a wasteful number, since it uses less digits than its factorization.

819378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951 (or 941 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 819378 is about 905.1950066146. The cubic root of 819378 is about 93.5753441523.

The spelling of 819378 in words is "eight hundred nineteen thousand, three hundred seventy-eight".