138178359 has 64 divisors (see below), whose sum is σ = 235699200. Its totient is φ = 79228800.

The previous prime is 138178351. The next prime is 138178373. The reversal of 138178359 is 953871831.

It is not a de Polignac number, because 138178359 - 2³ = 138178351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138178351) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 525262 + ... + 525524.

It is an arithmetic number, because the mean of its divisors is an integer number (3682800).

Almost surely, 2^138178359 is an apocalyptic number.

138178359 is a deficient number, since it is larger than the sum of its proper divisors (97520841).

138178359 is a wasteful number, since it uses less digits than its factorization.

138178359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 373 (or 367 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 138178359 is about 11754.9291363240. The cubic root of 138178359 is about 516.9874614570.

The spelling of 138178359 in words is "one hundred thirty-eight million, one hundred seventy-eight thousand, three hundred fifty-nine".