2144808140 has 24 divisors (see below), whose sum is σ = 4547830560. Its totient is φ = 849593088.

The previous prime is 2144808097. The next prime is 2144808181. The reversal of 2144808140 is 418084412.

It is a junction number, because it is equal to n+sod(n) for n = 2144808097 and 2144808106.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 518525 + ... + 522644.

It is an arithmetic number, because the mean of its divisors is an integer number (189492940).

Almost surely, 2^2144808140 is an apocalyptic number.

2144808140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2144808140 is an abundant number, since it is smaller than the sum of its proper divisors (2403022420).

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

2144808140 is a wasteful number, since it uses less digits than its factorization.

2144808140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1041281 (or 1041279 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 32.

The square root of 2144808140 is about 46312.0733718541. The cubic root of 2144808140 is about 1289.6231377153.

The spelling of 2144808140 in words is "two billion, one hundred forty-four million, eight hundred eight thousand, one hundred forty".