135819263 has 8 divisors (see below), whose sum is σ = 137639040. Its totient is φ = 134011800.

The previous prime is 135819259. The next prime is 135819289. The reversal of 135819263 is 362918531.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 135819263 - 2² = 135819259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135819253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20288 + ... + 26138.

It is an arithmetic number, because the mean of its divisors is an integer number (17204880).

Almost surely, 2^135819263 is an apocalyptic number.

135819263 is a deficient number, since it is larger than the sum of its proper divisors (1819777).

135819263 is a wasteful number, since it uses less digits than its factorization.

135819263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6157.

The product of its digits is 38880, while the sum is 38.

The square root of 135819263 is about 11654.1521785156. The cubic root of 135819263 is about 514.0284104167.

The spelling of 135819263 in words is "one hundred thirty-five million, eight hundred nineteen thousand, two hundred sixty-three".