1819285664 has 24 divisors (see below), whose sum is σ = 4093393248. Its totient is φ = 779693760.

The previous prime is 1819285621. The next prime is 1819285673. The reversal of 1819285664 is 4665829181.

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 3 ways as a sum of consecutive naturals, for example, 4060682 + ... + 4061129.

It is an arithmetic number, because the mean of its divisors is an integer number (170558052).

Almost surely, 2^1819285664 is an apocalyptic number.

1819285664 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1819285664 is an abundant number, since it is smaller than the sum of its proper divisors (2274107584).

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

1819285664 is an equidigital number, since it uses as much as digits as its factorization.

1819285664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8121828 (or 8121820 counting only the distinct ones).

The product of its digits is 829440, while the sum is 50.

The square root of 1819285664 is about 42653.0850466880. The cubic root of 1819285664 is about 1220.7693937441.

The spelling of 1819285664 in words is "one billion, eight hundred nineteen million, two hundred eighty-five thousand, six hundred sixty-four".