2150440000 has 140 divisors (see below), whose sum is σ = 5480280124. Its totient is φ = 836352000.

The previous prime is 2150439979. The next prime is 2150440009. The reversal of 2150440000 is 440512.

It can be written as a sum of positive squares in 10 ways, for example, as 545315904 + 1605124096 = 23352^2 + 40064^2 .

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2150440009) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1479274 + ... + 1480726.

Almost surely, 2^2150440000 is an apocalyptic number.

2150440000 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 2150440000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2740140062).

2150440000 is an abundant number, since it is smaller than the sum of its proper divisors (3329840124).

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

2150440000 is an equidigital number, since it uses as much as digits as its factorization.

2150440000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1522 (or 1497 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 2150440000 is about 46372.8368767752. The cubic root of 2150440000 is about 1290.7509198883.

Adding to 2150440000 its reverse (440512), we get a palindrome (2150880512).

It can be divided in two parts, 21504 and 40000, that added together give a square (61504 = 248²).

The spelling of 2150440000 in words is "two billion, one hundred fifty million, four hundred forty thousand".