2144535500 has 96 divisors (see below), whose sum is σ = 4886481600. Its totient is φ = 821184000.

The previous prime is 2144535469. The next prime is 2144535509. The reversal of 2144535500 is 55354412.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (2144535509) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1898936 + ... + 1900064.

It is an arithmetic number, because the mean of its divisors is an integer number (50900850).

Almost surely, 2^2144535500 is an apocalyptic number.

2144535500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2144535500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2443240800).

2144535500 is an abundant number, since it is smaller than the sum of its proper divisors (2741946100).

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

2144535500 is a wasteful number, since it uses less digits than its factorization.

2144535500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1308 (or 1296 counting only the distinct ones).

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 2144535500 is about 46309.1297694094. The cubic root of 2144535500 is about 1289.5684913742.

Adding to 2144535500 its reverse (55354412), we get a palindrome (2199889912).

The spelling of 2144535500 in words is "two billion, one hundred forty-four million, five hundred thirty-five thousand, five hundred".