4451538000 has 640 divisors, whose sum is σ = 18302828544. Its totient is φ = 905472000.

The previous prime is 4451537989. The next prime is 4451538001. The reversal of 4451538000 is 8351544.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4451538001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 16925869 + ... + 16926131.

Almost surely, 2^4451538000 is an apocalyptic number.

4451538000 is a gapful number since it is divisible by the number (40) 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 4451538000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9151414272).

4451538000 is an abundant number, since it is smaller than the sum of its proper divisors (13851290544).

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

4451538000 is a wasteful number, since it uses less digits than its factorization.

4451538000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340 (or 324 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 4451538000 is about 66719.8471221270. The cubic root of 4451538000 is about 1645.0156285566.

Adding to 4451538000 its reverse (8351544), we get a palindrome (4459889544).

The spelling of 4451538000 in words is "four billion, four hundred fifty-one million, five hundred thirty-eight thousand".