2144455000 has 160 divisors (see below), whose sum is σ = 5229576000. Its totient is φ = 823680000.

The previous prime is 2144454929. The next prime is 2144455009. The reversal of 2144455000 is 5544412.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144455009) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 24094956 + ... + 24095044.

It is an arithmetic number, because the mean of its divisors is an integer number (32684850).

Almost surely, 2^2144455000 is an apocalyptic number.

2144455000 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 2144455000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2614788000).

2144455000 is an abundant number, since it is smaller than the sum of its proper divisors (3085121000).

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

2144455000 is an equidigital number, since it uses as much as digits as its factorization.

2144455000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 236 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 2144455000 is about 46308.2606021863. The cubic root of 2144455000 is about 1289.5523555471.

Adding to 2144455000 its reverse (5544412), we get a palindrome (2149999412).

The spelling of 2144455000 in words is "two billion, one hundred forty-four million, four hundred fifty-five thousand".