138346371 has 6 divisors (see below), whose sum is σ = 199833660. Its totient is φ = 92230908.

The previous prime is 138346363. The next prime is 138346381. The reversal of 138346371 is 173643831.

138346371 is a `hidden beast` number, since 13 + 8 + 3 + 4 + 637 + 1 = 666.

It is not a de Polignac number, because 138346371 - 2³ = 138346363 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138346321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7685901 + ... + 7685918.

It is an arithmetic number, because the mean of its divisors is an integer number (33305610).

Almost surely, 2^138346371 is an apocalyptic number.

138346371 is a deficient number, since it is larger than the sum of its proper divisors (61487289).

138346371 is a wasteful number, since it uses less digits than its factorization.

138346371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15371825 (or 15371822 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 138346371 is about 11762.0734141562. The cubic root of 138346371 is about 517.1969127709.

The spelling of 138346371 in words is "one hundred thirty-eight million, three hundred forty-six thousand, three hundred seventy-one".