138139195 has 8 divisors (see below), whose sum is σ = 175518144. Its totient is φ = 104010624.

The previous prime is 138139189. The next prime is 138139207. The reversal of 138139195 is 591931831.

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

It is not a de Polignac number, because 138139195 - 2³ = 138139187 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 812499 + ... + 812668.

It is an arithmetic number, because the mean of its divisors is an integer number (21939768).

Almost surely, 2^138139195 is an apocalyptic number.

138139195 is a deficient number, since it is larger than the sum of its proper divisors (37378949).

138139195 is a wasteful number, since it uses less digits than its factorization.

138139195 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1625189.

The product of its digits is 29160, while the sum is 40.

The square root of 138139195 is about 11753.2631639047. The cubic root of 138139195 is about 516.9386134553.

The spelling of 138139195 in words is "one hundred thirty-eight million, one hundred thirty-nine thousand, one hundred ninety-five".