138146938658 has 16 divisors (see below), whose sum is σ = 207604299840. Its totient is φ = 68945612400.

The previous prime is 138146938627. The next prime is 138146938679. The reversal of 138146938658 is 856839641831.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 138146938658.

It is an unprimeable number.

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, 2681603 + ... + 2732633.

It is an arithmetic number, because the mean of its divisors is an integer number (12975268740).

Almost surely, 2^138146938658 is an apocalyptic number.

138146938658 is a deficient number, since it is larger than the sum of its proper divisors (69457361182).

138146938658 is a wasteful number, since it uses less digits than its factorization.

138146938658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53513.

The product of its digits is 29859840, while the sum is 62.

The spelling of 138146938658 in words is "one hundred thirty-eight billion, one hundred forty-six million, nine hundred thirty-eight thousand, six hundred fifty-eight".