1260320819 has 2 divisors, whose sum is σ = 1260320820. Its totient is φ = 1260320818.

The previous prime is 1260320813. The next prime is 1260320833. The reversal of 1260320819 is 9180230621.

It is a weak prime.

It is an emirp because it is prime and its reverse (9180230621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1260320819 - 2²⁴ = 1243543603 is a prime.

It is a super-2 number, since 2×1260320819² = 3176817133609661522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1260320813) 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 as a sum of consecutive naturals, namely, 630160409 + 630160410.

It is an arithmetic number, because the mean of its divisors is an integer number (630160410).

Almost surely, 2^1260320819 is an apocalyptic number.

1260320819 is a deficient number, since it is larger than the sum of its proper divisors (1).

1260320819 is an equidigital number, since it uses as much as digits as its factorization.

1260320819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 1260320819 is about 35500.9974366918. The cubic root of 1260320819 is about 1080.1739600325.

The spelling of 1260320819 in words is "one billion, two hundred sixty million, three hundred twenty thousand, eight hundred nineteen".