2144448820 has 12 divisors (see below), whose sum is σ = 4503342564. Its totient is φ = 857779520.

The previous prime is 2144448811. The next prime is 2144448827. The reversal of 2144448820 is 288444412.

It can be written as a sum of positive squares in 2 ways, for example, as 777963664 + 1366485156 = 27892^2 + 36966^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2144448820.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144448827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53611201 + ... + 53611240.

It is an arithmetic number, because the mean of its divisors is an integer number (375278547).

Almost surely, 2^2144448820 is an apocalyptic number.

2144448820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2144448820 is an abundant number, since it is smaller than the sum of its proper divisors (2358893744).

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

2144448820 is a wasteful number, since it uses less digits than its factorization.

2144448820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107222450 (or 107222448 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 37.

The square root of 2144448820 is about 46308.1938753824. The cubic root of 2144448820 is about 1289.5511167799.

The spelling of 2144448820 in words is "two billion, one hundred forty-four million, four hundred forty-eight thousand, eight hundred twenty".