138132218 has 24 divisors (see below), whose sum is σ = 244706976. Its totient is φ = 57284280.

The previous prime is 138132179. The next prime is 138132229. The reversal of 138132218 is 812231831.

138132218 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 8321 + ... + 18587.

It is an arithmetic number, because the mean of its divisors is an integer number (10196124).

Almost surely, 2^138132218 is an apocalyptic number.

138132218 is a deficient number, since it is larger than the sum of its proper divisors (106574758).

138132218 is a wasteful number, since it uses less digits than its factorization.

138132218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10338 (or 10307 counting only the distinct ones).

The product of its digits is 2304, while the sum is 29.

The square root of 138132218 is about 11752.9663489691. The cubic root of 138132218 is about 516.9299102980.

The spelling of 138132218 in words is "one hundred thirty-eight million, one hundred thirty-two thousand, two hundred eighteen".