2144369520 has 120 divisors (see below), whose sum is σ = 7209953712. Its totient is φ = 571161600.

The previous prime is 2144369509. The next prime is 2144369527. The reversal of 2144369520 is 259634412.

It is a happy number.

2144369520 is a `hidden beast` number, since 214 + 436 + 9 + 5 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2144369527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1065315 + ... + 1067325.

Almost surely, 2^2144369520 is an apocalyptic number.

2144369520 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 2144369520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3604976856).

2144369520 is an abundant number, since it is smaller than the sum of its proper divisors (5065584192).

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

2144369520 is a wasteful number, since it uses less digits than its factorization.

2144369520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3511 (or 3502 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 2144369520 is about 46307.3376475046. The cubic root of 2144369520 is about 1289.5352210615.

The spelling of 2144369520 in words is "two billion, one hundred forty-four million, three hundred sixty-nine thousand, five hundred twenty".