138275534 has 8 divisors (see below), whose sum is σ = 212472288. Its totient is φ = 67451440.

The previous prime is 138275507. The next prime is 138275539. The reversal of 138275534 is 435572831.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138275539) 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, 843062 + ... + 843225.

It is an arithmetic number, because the mean of its divisors is an integer number (26559036).

Almost surely, 2^138275534 is an apocalyptic number.

138275534 is a deficient number, since it is larger than the sum of its proper divisors (74196754).

138275534 is a wasteful number, since it uses less digits than its factorization.

138275534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1686330.

The product of its digits is 100800, while the sum is 38.

The square root of 138275534 is about 11759.0617823022. The cubic root of 138275534 is about 517.1086248691.

The spelling of 138275534 in words is "one hundred thirty-eight million, two hundred seventy-five thousand, five hundred thirty-four".