138703378 has 8 divisors (see below), whose sum is σ = 226969200. Its totient is φ = 63046980.

The previous prime is 138703373. The next prime is 138703379. The reversal of 138703378 is 873307831.

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

It is a super-2 number, since 2×138703378² = 38477254137221768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 138703378.

It is not an unprimeable number, because it can be changed into a prime (138703373) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3152328 + ... + 3152371.

It is an arithmetic number, because the mean of its divisors is an integer number (28371150).

Almost surely, 2^138703378 is an apocalyptic number.

138703378 is a deficient number, since it is larger than the sum of its proper divisors (88265822).

138703378 is a wasteful number, since it uses less digits than its factorization.

138703378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6304712.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 138703378 is about 11777.2398294337. The cubic root of 138703378 is about 517.6414114079.

The spelling of 138703378 in words is "one hundred thirty-eight million, seven hundred three thousand, three hundred seventy-eight".