138894382 has 16 divisors (see below), whose sum is σ = 227473200. Its totient is φ = 63080640.

The previous prime is 138894341. The next prime is 138894407. The reversal of 138894382 is 283498831.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37594 + ... + 41122.

It is an arithmetic number, because the mean of its divisors is an integer number (14217075).

Almost surely, 2^138894382 is an apocalyptic number.

138894382 is a deficient number, since it is larger than the sum of its proper divisors (88578818).

138894382 is a wasteful number, since it uses less digits than its factorization.

138894382 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5331.

The product of its digits is 331776, while the sum is 46.

The square root of 138894382 is about 11785.3460704385. The cubic root of 138894382 is about 517.8789115850.

The spelling of 138894382 in words is "one hundred thirty-eight million, eight hundred ninety-four thousand, three hundred eighty-two".