1355305129 has 2 divisors, whose sum is σ = 1355305130. Its totient is φ = 1355305128.

The previous prime is 1355305109. The next prime is 1355305219. The reversal of 1355305129 is 9215035531.

Together with next prime (1355305219) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 683717904 + 671587225 = 26148^2 + 25915^2 .

It is a cyclic number.

It is not a de Polignac number, because 1355305129 - 2⁵ = 1355305097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1355305094 and 1355305103.

It is not a weakly prime, because it can be changed into another prime (1355305109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 677652564 + 677652565.

It is an arithmetic number, because the mean of its divisors is an integer number (677652565).

Almost surely, 2^1355305129 is an apocalyptic number.

It is an amenable number.

1355305129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1355305129 is an equidigital number, since it uses as much as digits as its factorization.

1355305129 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20250, while the sum is 34.

The square root of 1355305129 is about 36814.4690169504. The cubic root of 1355305129 is about 1106.6552804731.

The spelling of 1355305129 in words is "one billion, three hundred fifty-five million, three hundred five thousand, one hundred twenty-nine".