135362809 has 2 divisors, whose sum is σ = 135362810. Its totient is φ = 135362808.

The previous prime is 135362803. The next prime is 135362827. The reversal of 135362809 is 908263531.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 107060409 + 28302400 = 10347^2 + 5320^2 .

It is a cyclic number.

It is not a de Polignac number, because 135362809 - 2¹³ = 135354617 is a prime.

It is not a weakly prime, because it can be changed into another prime (135362803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67681404 + 67681405.

It is an arithmetic number, because the mean of its divisors is an integer number (67681405).

Almost surely, 2^135362809 is an apocalyptic number.

It is an amenable number.

135362809 is a deficient number, since it is larger than the sum of its proper divisors (1).

135362809 is an equidigital number, since it uses as much as digits as its factorization.

135362809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 135362809 is about 11634.5523764346. The cubic root of 135362809 is about 513.4519245413.

The spelling of 135362809 in words is "one hundred thirty-five million, three hundred sixty-two thousand, eight hundred nine".