819470900 has 36 divisors (see below), whose sum is σ = 1780367820. Its totient is φ = 327398400.

The previous prime is 819470891. The next prime is 819470959. The reversal of 819470900 is 9074918.

It can be written as a sum of positive squares in 6 ways, for example, as 122722084 + 696748816 = 11078^2 + 26396^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88490 + ... + 97310.

Almost surely, 2^819470900 is an apocalyptic number.

It is an amenable number.

819470900 is an abundant number, since it is smaller than the sum of its proper divisors (960896920).

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

819470900 is a wasteful number, since it uses less digits than its factorization.

819470900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9764 (or 9757 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 819470900 is about 28626.4021490651. The cubic root of 819470900 is about 935.7888050181.

The spelling of 819470900 in words is "eight hundred nineteen million, four hundred seventy thousand, nine hundred".