138355235 has 16 divisors (see below), whose sum is σ = 173664000. Its totient is φ = 105615840.

The previous prime is 138355229. The next prime is 138355249. The reversal of 138355235 is 532553831.

It is not a de Polignac number, because 138355235 - 2⁶ = 138355171 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138355195 and 138355204.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56180 + ... + 58590.

It is an arithmetic number, because the mean of its divisors is an integer number (10854000).

Almost surely, 2^138355235 is an apocalyptic number.

138355235 is a deficient number, since it is larger than the sum of its proper divisors (35308765).

138355235 is a wasteful number, since it uses less digits than its factorization.

138355235 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2938.

The product of its digits is 54000, while the sum is 35.

The square root of 138355235 is about 11762.4502124345. The cubic root of 138355235 is about 517.2079583216.

The spelling of 138355235 in words is "one hundred thirty-eight million, three hundred fifty-five thousand, two hundred thirty-five".