138683946 has 16 divisors (see below), whose sum is σ = 278085600. Its totient is φ = 46108368.

The previous prime is 138683939. The next prime is 138683957. The reversal of 138683946 is 649386831.

It is a junction number, because it is equal to n+sod(n) for n = 138683895 and 138683904.

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, 27376 + ... + 32043.

It is an arithmetic number, because the mean of its divisors is an integer number (17380350).

Almost surely, 2^138683946 is an apocalyptic number.

138683946 is an abundant number, since it is smaller than the sum of its proper divisors (139401654).

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

138683946 is a wasteful number, since it uses less digits than its factorization.

138683946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59813.

The product of its digits is 746496, while the sum is 48.

The square root of 138683946 is about 11776.4148194601. The cubic root of 138683946 is about 517.6172368520.

The spelling of 138683946 in words is "one hundred thirty-eight million, six hundred eighty-three thousand, nine hundred forty-six".