138471846 has 16 divisors (see below), whose sum is σ = 277215600. Its totient is φ = 46111968.

The previous prime is 138471833. The next prime is 138471869. The reversal of 138471846 is 648174831.

It is a junction number, because it is equal to n+sod(n) for n = 138471798 and 138471807.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4381 + ... + 17208.

It is an arithmetic number, because the mean of its divisors is an integer number (17325975).

Almost surely, 2^138471846 is an apocalyptic number.

138471846 is an abundant number, since it is smaller than the sum of its proper divisors (138743754).

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

138471846 is a wasteful number, since it uses less digits than its factorization.

138471846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22663.

The product of its digits is 129024, while the sum is 42.

The square root of 138471846 is about 11767.4060863047. The cubic root of 138471846 is about 517.3532249624.

The spelling of 138471846 in words is "one hundred thirty-eight million, four hundred seventy-one thousand, eight hundred forty-six".