135185519 has 8 divisors (see below), whose sum is σ = 154647840. Its totient is φ = 115760736.

The previous prime is 135185509. The next prime is 135185539. The reversal of 135185519 is 915581531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 135185519 - 2⁸ = 135185263 is a prime.

It is a super-2 number, since 2×135185519² = 36550249094598722, 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 (135185509) 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 7 ways as a sum of consecutive naturals, for example, 1184 + ... + 16485.

It is an arithmetic number, because the mean of its divisors is an integer number (19330980).

Almost surely, 2^135185519 is an apocalyptic number.

135185519 is a deficient number, since it is larger than the sum of its proper divisors (19462321).

135185519 is a wasteful number, since it uses less digits than its factorization.

135185519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18769.

The product of its digits is 27000, while the sum is 38.

The square root of 135185519 is about 11626.9307643935. The cubic root of 135185519 is about 513.2276638719.

The spelling of 135185519 in words is "one hundred thirty-five million, one hundred eighty-five thousand, five hundred nineteen".