1530221516 has 12 divisors (see below), whose sum is σ = 2743202280. Its totient is φ = 746449440.

The previous prime is 1530221513. The next prime is 1530221549. The reversal of 1530221516 is 6151220351.

It is not an unprimeable number, because it can be changed into a prime (1530221513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4665146 + ... + 4665473.

It is an arithmetic number, because the mean of its divisors is an integer number (228600190).

Almost surely, 2^1530221516 is an apocalyptic number.

It is an amenable number.

1530221516 is a deficient number, since it is larger than the sum of its proper divisors (1212980764).

1530221516 is a wasteful number, since it uses less digits than its factorization.

1530221516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9330664 (or 9330662 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 1530221516 is about 39118.0459123408. The cubic root of 1530221516 is about 1152.3509602539.

Adding to 1530221516 its reverse (6151220351), we get a palindrome (7681441867).

The spelling of 1530221516 in words is "one billion, five hundred thirty million, two hundred twenty-one thousand, five hundred sixteen".