1260748409 has 2 divisors, whose sum is σ = 1260748410. Its totient is φ = 1260748408.

The previous prime is 1260748367. The next prime is 1260748417. The reversal of 1260748409 is 9048470621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1228712809 + 32035600 = 35053^2 + 5660^2 .

It is an emirp because it is prime and its reverse (9048470621) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1260748409 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1260748459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 630374204 + 630374205.

It is an arithmetic number, because the mean of its divisors is an integer number (630374205).

Almost surely, 2^1260748409 is an apocalyptic number.

It is an amenable number.

1260748409 is a deficient number, since it is larger than the sum of its proper divisors (1).

1260748409 is an equidigital number, since it uses as much as digits as its factorization.

1260748409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 1260748409 is about 35507.0191511481. The cubic root of 1260748409 is about 1080.2961033665.

It can be divided in two parts, 12607 and 48409, that added together give a palindrome (61016).

The spelling of 1260748409 in words is "one billion, two hundred sixty million, seven hundred forty-eight thousand, four hundred nine".