138144219 has 8 divisors (see below), whose sum is σ = 186524160. Its totient is φ = 90930216.

The previous prime is 138144217. The next prime is 138144229. The reversal of 138144219 is 912441831.

It is a happy number.

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

It is not a de Polignac number, because 138144219 - 2¹ = 138144217 is a prime.

It is a super-2 number, since 2×138144219² = 38167650486239922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 138144219.

It is not an unprimeable number, because it can be changed into a prime (138144217) 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 7 ways as a sum of consecutive naturals, for example, 291207 + ... + 291680.

It is an arithmetic number, because the mean of its divisors is an integer number (23315520).

Almost surely, 2^138144219 is an apocalyptic number.

138144219 is a deficient number, since it is larger than the sum of its proper divisors (48379941).

138144219 is an equidigital number, since it uses as much as digits as its factorization.

138144219 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 582969.

The product of its digits is 6912, while the sum is 33.

The square root of 138144219 is about 11753.4768898399. The cubic root of 138144219 is about 516.9448802457.

The spelling of 138144219 in words is "one hundred thirty-eight million, one hundred forty-four thousand, two hundred nineteen".