1348628509 has 2 divisors, whose sum is σ = 1348628510. Its totient is φ = 1348628508.

The previous prime is 1348628497. The next prime is 1348628521. The reversal of 1348628509 is 9058268431.

It is a balanced prime because it is at equal distance from previous prime (1348628497) and next prime (1348628521).

It can be written as a sum of positive squares in only one way, i.e., 1188732484 + 159896025 = 34478^2 + 12645^2 .

It is an emirp because it is prime and its reverse (9058268431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1348628509 - 2¹⁵ = 1348595741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1348628009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 674314254 + 674314255.

It is an arithmetic number, because the mean of its divisors is an integer number (674314255).

Almost surely, 2^1348628509 is an apocalyptic number.

It is an amenable number.

1348628509 is a deficient number, since it is larger than the sum of its proper divisors (1).

1348628509 is an equidigital number, since it uses as much as digits as its factorization.

1348628509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 414720, while the sum is 46.

The square root of 1348628509 is about 36723.6777706155. The cubic root of 1348628509 is about 1104.8350549234.

The spelling of 1348628509 in words is "one billion, three hundred forty-eight million, six hundred twenty-eight thousand, five hundred nine".