138195023158 has 16 divisors (see below), whose sum is σ = 207758154240. Its totient is φ = 68942477736.

The previous prime is 138195023147. The next prime is 138195023159. The reversal of 138195023158 is 851320591831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138195023159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1593135 + ... + 1677637.

It is an arithmetic number, because the mean of its divisors is an integer number (12984884640).

Almost surely, 2^138195023158 is an apocalyptic number.

138195023158 is a deficient number, since it is larger than the sum of its proper divisors (69563131082).

138195023158 is a wasteful number, since it uses less digits than its factorization.

138195023158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86331.

The product of its (nonzero) digits is 259200, while the sum is 46.

The spelling of 138195023158 in words is "one hundred thirty-eight billion, one hundred ninety-five million, twenty-three thousand, one hundred fifty-eight".