1816823632 has 20 divisors (see below), whose sum is σ = 3790872820. Its totient is φ = 838533888.

The previous prime is 1816823629. The next prime is 1816823647. The reversal of 1816823632 is 2363286181.

It can be written as a sum of positive squares in 2 ways, for example, as 1228081936 + 588741696 = 35044^2 + 24264^2 .

It is a congruent number.

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 in 3 ways as a sum of consecutive naturals, for example, 4367157 + ... + 4367572.

It is an arithmetic number, because the mean of its divisors is an integer number (189543641).

Almost surely, 2^1816823632 is an apocalyptic number.

It is an amenable number.

1816823632 is an abundant number, since it is smaller than the sum of its proper divisors (1974049188).

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

1816823632 is a wasteful number, since it uses less digits than its factorization.

1816823632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8734750 (or 8734744 counting only the distinct ones).

The product of its digits is 82944, while the sum is 40.

The square root of 1816823632 is about 42624.2141511137. The cubic root of 1816823632 is about 1220.2184576997.

The spelling of 1816823632 in words is "one billion, eight hundred sixteen million, eight hundred twenty-three thousand, six hundred thirty-two".