1819828328 has 8 divisors (see below), whose sum is σ = 3412178130. Its totient is φ = 909914160.

The previous prime is 1819828277. The next prime is 1819828343. The reversal of 1819828328 is 8238289181.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1021313764 + 798514564 = 31958^2 + 28258^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 113739263 + ... + 113739278.

Almost surely, 2^1819828328 is an apocalyptic number.

It is an amenable number.

1819828328 is a deficient number, since it is larger than the sum of its proper divisors (1592349802).

1819828328 is a wasteful number, since it uses less digits than its factorization.

1819828328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227478547 (or 227478543 counting only the distinct ones).

The product of its digits is 442368, while the sum is 50.

The square root of 1819828328 is about 42659.4459410809. The cubic root of 1819828328 is about 1220.8907603806.

The spelling of 1819828328 in words is "one billion, eight hundred nineteen million, eight hundred twenty-eight thousand, three hundred twenty-eight".