138143195 has 8 divisors (see below), whose sum is σ = 166466880. Its totient is φ = 110051200.

The previous prime is 138143191. The next prime is 138143231. The reversal of 138143195 is 591341831.

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

It is not a de Polignac number, because 138143195 - 2² = 138143191 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138143191) 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, 56606 + ... + 58995.

It is an arithmetic number, because the mean of its divisors is an integer number (20808360).

Almost surely, 2^138143195 is an apocalyptic number.

138143195 is a deficient number, since it is larger than the sum of its proper divisors (28323685).

138143195 is a wasteful number, since it uses less digits than its factorization.

138143195 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115845.

The product of its digits is 12960, while the sum is 35.

The square root of 138143195 is about 11753.4333281812. The cubic root of 138143195 is about 516.9436029504.

The spelling of 138143195 in words is "one hundred thirty-eight million, one hundred forty-three thousand, one hundred ninety-five".