138680794 has 16 divisors (see below), whose sum is σ = 245408256. Its totient is φ = 57517200.

The previous prime is 138680761. The next prime is 138680833. The reversal of 138680794 is 497086831.

It is a happy 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, 159337 + ... + 160204.

It is an arithmetic number, because the mean of its divisors is an integer number (15338016).

Almost surely, 2^138680794 is an apocalyptic number.

138680794 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

138680794 is a deficient number, since it is larger than the sum of its proper divisors (106727462).

138680794 is a wasteful number, since it uses less digits than its factorization.

138680794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319581.

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 138680794 is about 11776.2809918921. The cubic root of 138680794 is about 517.6133153650.

The spelling of 138680794 in words is "one hundred thirty-eight million, six hundred eighty thousand, seven hundred ninety-four".