135385538 has 8 divisors (see below), whose sum is σ = 203267388. Its totient is φ = 67629744.

The previous prime is 135385531. The next prime is 135385561. The reversal of 135385538 is 835583531.

It can be written as a sum of positive squares in 2 ways, for example, as 123365449 + 12020089 = 11107^2 + 3467^2 .

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 135385495 and 135385504.

It is not an unprimeable number, because it can be changed into a prime (135385531) 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, 28781 + ... + 33152.

Almost surely, 2^135385538 is an apocalyptic number.

135385538 is a deficient number, since it is larger than the sum of its proper divisors (67881850).

135385538 is a wasteful number, since it uses less digits than its factorization.

135385538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63028.

The product of its digits is 216000, while the sum is 41.

The square root of 135385538 is about 11635.5291241954. The cubic root of 135385538 is about 513.4806611289.

The spelling of 135385538 in words is "one hundred thirty-five million, three hundred eighty-five thousand, five hundred thirty-eight".