138171548 has 12 divisors (see below), whose sum is σ = 242012232. Its totient is φ = 69025200.

The previous prime is 138171547. The next prime is 138171559. The reversal of 138171548 is 845171831.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138171547) 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, 9803 + ... + 19298.

It is an arithmetic number, because the mean of its divisors is an integer number (20167686).

Almost surely, 2^138171548 is an apocalyptic number.

It is an amenable number.

138171548 is a deficient number, since it is larger than the sum of its proper divisors (103840684).

138171548 is a wasteful number, since it uses less digits than its factorization.

138171548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30292 (or 30290 counting only the distinct ones).

The product of its digits is 26880, while the sum is 38.

The square root of 138171548 is about 11754.6394244996. The cubic root of 138171548 is about 516.9789669781.

The spelling of 138171548 in words is "one hundred thirty-eight million, one hundred seventy-one thousand, five hundred forty-eight".