138219695 has 8 divisors (see below), whose sum is σ = 165927744. Its totient is φ = 110533024.

The previous prime is 138219691. The next prime is 138219703. The reversal of 138219695 is 596912831.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 138219695 - 2² = 138219691 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138219691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18842 + ... + 25128.

It is an arithmetic number, because the mean of its divisors is an integer number (20740968).

Almost surely, 2^138219695 is an apocalyptic number.

138219695 is a deficient number, since it is larger than the sum of its proper divisors (27708049).

138219695 is an equidigital number, since it uses as much as digits as its factorization.

138219695 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10689.

The product of its digits is 116640, while the sum is 44.

The square root of 138219695 is about 11756.6872459890. The cubic root of 138219695 is about 517.0390085137.

The spelling of 138219695 in words is "one hundred thirty-eight million, two hundred nineteen thousand, six hundred ninety-five".