138838354 has 16 divisors (see below), whose sum is σ = 222465528. Its totient is φ = 64755712.

The previous prime is 138838351. The next prime is 138838361. The reversal of 138838354 is 453838831.

It can be written as a sum of positive squares in 4 ways, for example, as 104346225 + 34492129 = 10215^2 + 5873^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 138838354.

It is not an unprimeable number, because it can be changed into a prime (138838351) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14227 + ... + 21910.

Almost surely, 2^138838354 is an apocalyptic number.

138838354 is a deficient number, since it is larger than the sum of its proper divisors (83627174).

138838354 is a wasteful number, since it uses less digits than its factorization.

138838354 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36269.

The product of its digits is 276480, while the sum is 43.

The square root of 138838354 is about 11782.9688109576. The cubic root of 138838354 is about 517.8092672466.

The spelling of 138838354 in words is "one hundred thirty-eight million, eight hundred thirty-eight thousand, three hundred fifty-four".