135803519 has 4 divisors (see below), whose sum is σ = 135838296. Its totient is φ = 135768744.

The previous prime is 135803509. The next prime is 135803527. The reversal of 135803519 is 915308531.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135803519 is a prime.

It is a super-2 number, since 2×135803519² = 36885191545566722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135803509) 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 in 3 ways as a sum of consecutive naturals, for example, 10664 + ... + 19629.

It is an arithmetic number, because the mean of its divisors is an integer number (33959574).

Almost surely, 2^135803519 is an apocalyptic number.

135803519 is a deficient number, since it is larger than the sum of its proper divisors (34777).

135803519 is an equidigital number, since it uses as much as digits as its factorization.

135803519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34776.

The product of its (nonzero) digits is 16200, while the sum is 35.

The square root of 135803519 is about 11653.4766915286. The cubic root of 135803519 is about 514.0085478046.

The spelling of 135803519 in words is "one hundred thirty-five million, eight hundred three thousand, five hundred nineteen".