135608519 has 2 divisors, whose sum is σ = 135608520. Its totient is φ = 135608518.

The previous prime is 135608423. The next prime is 135608527. The reversal of 135608519 is 915806531.

It is a strong prime.

It is an emirp because it is prime and its reverse (915806531) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 135608519 - 2²⁴ = 118831303 is a prime.

It is a super-2 number, since 2×135608519² = 36779340850746722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135608569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67804259 + 67804260.

It is an arithmetic number, because the mean of its divisors is an integer number (67804260).

Almost surely, 2^135608519 is an apocalyptic number.

135608519 is a deficient number, since it is larger than the sum of its proper divisors (1).

135608519 is an equidigital number, since it uses as much as digits as its factorization.

135608519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 38.

The square root of 135608519 is about 11645.1070840933. The cubic root of 135608519 is about 513.7624086765.

The spelling of 135608519 in words is "one hundred thirty-five million, six hundred eight thousand, five hundred nineteen".