1260815015 has 32 divisors (see below), whose sum is σ = 1616483520. Its totient is φ = 941359104.

The previous prime is 1260814987. The next prime is 1260815051. The reversal of 1260815015 is 5105180621.

It is not a de Polignac number, because 1260815015 - 2²⁰ = 1259766439 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2758667 + ... + 2759123.

It is an arithmetic number, because the mean of its divisors is an integer number (50515110).

Almost surely, 2^1260815015 is an apocalyptic number.

1260815015 is a deficient number, since it is larger than the sum of its proper divisors (355668505).

1260815015 is a wasteful number, since it uses less digits than its factorization.

1260815015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851.

The product of its (nonzero) digits is 2400, while the sum is 29.

The square root of 1260815015 is about 35507.9570659873. The cubic root of 1260815015 is about 1080.3151272348.

Adding to 1260815015 its reverse (5105180621), we get a palindrome (6365995636).

The spelling of 1260815015 in words is "one billion, two hundred sixty million, eight hundred fifteen thousand, fifteen".