138855635 has 8 divisors (see below), whose sum is σ = 171130416. Its totient is φ = 108082080.

The previous prime is 138855611. The next prime is 138855649. The reversal of 138855635 is 536558831.

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

It is not a de Polignac number, because 138855635 - 2⁶ = 138855571 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 375101 + ... + 375470.

It is an arithmetic number, because the mean of its divisors is an integer number (21391302).

Almost surely, 2^138855635 is an apocalyptic number.

138855635 is a deficient number, since it is larger than the sum of its proper divisors (32274781).

138855635 is an equidigital number, since it uses as much as digits as its factorization.

138855635 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 750613.

The product of its digits is 432000, while the sum is 44.

The square root of 138855635 is about 11783.7020922968. The cubic root of 138855635 is about 517.8307500008.

The spelling of 138855635 in words is "one hundred thirty-eight million, eight hundred fifty-five thousand, six hundred thirty-five".