138948636234 has 16 divisors (see below), whose sum is σ = 277929403488. Its totient is φ = 46310856912.

The previous prime is 138948636217. The next prime is 138948636241. The reversal of 138948636234 is 432636849831.

It is a super-2 number, since 2×138948636234² (a number of 23 digits) contains 22 as substring.

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, 1282392 + ... + 1386515.

It is an arithmetic number, because the mean of its divisors is an integer number (17370587718).

Almost surely, 2^138948636234 is an apocalyptic number.

138948636234 is an abundant number, since it is smaller than the sum of its proper divisors (138980767254).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138948636234 is a wasteful number, since it uses less digits than its factorization.

138948636234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2677589.

The product of its digits is 17915904, while the sum is 57.

The spelling of 138948636234 in words is "one hundred thirty-eight billion, nine hundred forty-eight million, six hundred thirty-six thousand, two hundred thirty-four".