1215530014 has 4 divisors (see below), whose sum is σ = 1823295024. Its totient is φ = 607765006.

The previous prime is 1215530003. The next prime is 1215530021. The reversal of 1215530014 is 4100355121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4100355121 = 4093 ⋅1001797.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 303882502 + ... + 303882505.

It is an arithmetic number, because the mean of its divisors is an integer number (455823756).

Almost surely, 2^1215530014 is an apocalyptic number.

1215530014 is a deficient number, since it is larger than the sum of its proper divisors (607765010).

1215530014 is an equidigital number, since it uses as much as digits as its factorization.

1215530014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607765009.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1215530014 is about 34864.4520106082. The cubic root of 1215530014 is about 1067.2231295519.

Adding to 1215530014 its reverse (4100355121), we get a palindrome (5315885135).

The spelling of 1215530014 in words is "one billion, two hundred fifteen million, five hundred thirty thousand, fourteen".