1260321513 has 16 divisors (see below), whose sum is σ = 1834119936. Its totient is φ = 763445840.

The previous prime is 1260321481. The next prime is 1260321541. The reversal of 1260321513 is 3151230621.

It is a cyclic number.

It is not a de Polignac number, because 1260321513 - 2⁵ = 1260321481 is a prime.

It is a super-2 number, since 2×1260321513² = 3176820632261218338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1260321553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65506 + ... + 82532.

It is an arithmetic number, because the mean of its divisors is an integer number (114632496).

Almost surely, 2^1260321513 is an apocalyptic number.

It is an amenable number.

1260321513 is a deficient number, since it is larger than the sum of its proper divisors (573798423).

1260321513 is a wasteful number, since it uses less digits than its factorization.

1260321513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19284.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 1260321513 is about 35501.0072110637. The cubic root of 1260321513 is about 1080.1741582996.

The spelling of 1260321513 in words is "one billion, two hundred sixty million, three hundred twenty-one thousand, five hundred thirteen".