135928519 has 4 divisors (see below), whose sum is σ = 137566296. Its totient is φ = 134290744.

The previous prime is 135928501. The next prime is 135928531. The reversal of 135928519 is 915829531.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 915829531 = 10399 ⋅88069.

It is a cyclic number.

It is not a de Polignac number, because 135928519 - 2⁹ = 135928007 is a prime.

It is a super-2 number, since 2×135928519² = 36953124555066722, 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 (135928019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 818764 + ... + 818929.

It is an arithmetic number, because the mean of its divisors is an integer number (34391574).

Almost surely, 2^135928519 is an apocalyptic number.

135928519 is a deficient number, since it is larger than the sum of its proper divisors (1637777).

135928519 is an equidigital number, since it uses as much as digits as its factorization.

135928519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1637776.

The product of its digits is 97200, while the sum is 43.

The square root of 135928519 is about 11658.8386642924. The cubic root of 135928519 is about 514.1662053915.

The spelling of 135928519 in words is "one hundred thirty-five million, nine hundred twenty-eight thousand, five hundred nineteen".