138635435 has 8 divisors (see below), whose sum is σ = 166448736. Its totient is φ = 110850880.

The previous prime is 138635429. The next prime is 138635437. The reversal of 138635435 is 534536831.

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

It is not a de Polignac number, because 138635435 - 2¹⁰ = 138634411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138635437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5450 + ... + 17520.

It is an arithmetic number, because the mean of its divisors is an integer number (20806092).

Almost surely, 2^138635435 is an apocalyptic number.

138635435 is a deficient number, since it is larger than the sum of its proper divisors (27813301).

138635435 is a wasteful number, since it uses less digits than its factorization.

138635435 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14373.

The product of its digits is 129600, while the sum is 38.

The square root of 138635435 is about 11774.3549717171. The cubic root of 138635435 is about 517.5568764453.

The spelling of 138635435 in words is "one hundred thirty-eight million, six hundred thirty-five thousand, four hundred thirty-five".