1215630533 has 8 divisors (see below), whose sum is σ = 1324914528. Its totient is φ = 1108599984.

The previous prime is 1215630527. The next prime is 1215630551. The reversal of 1215630533 is 3350365121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1215630533 - 2⁴ = 1215630517 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1215630496 and 1215630505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1215630593) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 562235 + ... + 564392.

It is an arithmetic number, because the mean of its divisors is an integer number (165614316).

Almost surely, 2^1215630533 is an apocalyptic number.

1215630533 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1215630533 is a deficient number, since it is larger than the sum of its proper divisors (109283995).

1215630533 is a wasteful number, since it uses less digits than its factorization.

1215630533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126723.

The product of its (nonzero) digits is 8100, while the sum is 29.

The square root of 1215630533 is about 34865.8935494274. The cubic root of 1215630533 is about 1067.2525469648.

Adding to 1215630533 its reverse (3350365121), we get a palindrome (4565995654).

The spelling of 1215630533 in words is "one billion, two hundred fifteen million, six hundred thirty thousand, five hundred thirty-three".