135819245 has 16 divisors (see below), whose sum is σ = 167333040. Its totient is φ = 105792000.

The previous prime is 135819227. The next prime is 135819247. The reversal of 135819245 is 542918531.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 14577124 + 121242121 = 3818^2 + 11011^2 .

It is not a de Polignac number, because 135819245 - 2⁶ = 135819181 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 135819199 and 135819208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135819247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28601 + ... + 33009.

It is an arithmetic number, because the mean of its divisors is an integer number (10458315).

Almost surely, 2^135819245 is an apocalyptic number.

It is an amenable number.

135819245 is a deficient number, since it is larger than the sum of its proper divisors (31513795).

135819245 is a wasteful number, since it uses less digits than its factorization.

135819245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4576.

The product of its digits is 43200, while the sum is 38.

The square root of 135819245 is about 11654.1514062586. The cubic root of 135819245 is about 514.0283877088.

The spelling of 135819245 in words is "one hundred thirty-five million, eight hundred nineteen thousand, two hundred forty-five".