1530018144 has 144 divisors (see below), whose sum is σ = 4687248384. Its totient is φ = 472032000.

The previous prime is 1530018109. The next prime is 1530018179. The reversal of 1530018144 is 4418100351.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1530018109) and next prime (1530018179).

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 201619 + ... + 209069.

It is an arithmetic number, because the mean of its divisors is an integer number (32550336).

Almost surely, 2^1530018144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1530018144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2343624192).

1530018144 is an abundant number, since it is smaller than the sum of its proper divisors (3157230240).

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

1530018144 is a wasteful number, since it uses less digits than its factorization.

1530018144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7521 (or 7510 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 1530018144 is about 39115.4463607409. The cubic root of 1530018144 is about 1152.2999074488.

Adding to 1530018144 its reverse (4418100351), we get a palindrome (5948118495).

The spelling of 1530018144 in words is "one billion, five hundred thirty million, eighteen thousand, one hundred forty-four".