138533782 has 8 divisors (see below), whose sum is σ = 220024296. Its totient is φ = 65192352.

The previous prime is 138533771. The next prime is 138533803. The reversal of 138533782 is 287335831.

138533782 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 2037228 + ... + 2037295.

It is an arithmetic number, because the mean of its divisors is an integer number (27503037).

Almost surely, 2^138533782 is an apocalyptic number.

138533782 is a deficient number, since it is larger than the sum of its proper divisors (81490514).

138533782 is a wasteful number, since it uses less digits than its factorization.

138533782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4074542.

The product of its digits is 120960, while the sum is 40.

The square root of 138533782 is about 11770.0374680797. The cubic root of 138533782 is about 517.4303477713.

The spelling of 138533782 in words is "one hundred thirty-eight million, five hundred thirty-three thousand, seven hundred eighty-two".