2044646420 has 18 divisors (see below), whose sum is σ = 4294182186. Its totient is φ = 817777680.

The previous prime is 2044646419. The next prime is 2044646441. The reversal of 2044646420 is 246464402.

It can be written as a sum of positive squares in only one way, i.e., 1635717136 + 408929284 = 40444^2 + 20222^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 197165 + ... + 207275.

It is an arithmetic number, because the mean of its divisors is an integer number (238565677).

Almost surely, 2^2044646420 is an apocalyptic number.

2044646420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2044646420 is an abundant number, since it is smaller than the sum of its proper divisors (2249535766).

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

2044646420 is an frugal number, since it uses more digits than its factorization.

2044646420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20231 (or 10118 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

The square root of 2044646420 is about 45217.7666410007. The cubic root of 2044646420 is about 1269.2273018897.

It can be divided in two parts, 20446 and 46420, that added together give a palindrome (66866).

The spelling of 2044646420 in words is "two billion, forty-four million, six hundred forty-six thousand, four hundred twenty".