138945716 has 36 divisors (see below), whose sum is σ = 300922272. Its totient is φ = 54965664.

The previous prime is 138945683. The next prime is 138945733. The reversal of 138945716 is 617549831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9950 + ... + 19413.

It is an arithmetic number, because the mean of its divisors is an integer number (8358952).

Almost surely, 2^138945716 is an apocalyptic number.

It is an amenable number.

138945716 is an abundant number, since it is smaller than the sum of its proper divisors (161976556).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138945716 is a wasteful number, since it uses less digits than its factorization.

138945716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29400 (or 29385 counting only the distinct ones).

The product of its digits is 181440, while the sum is 44.

The square root of 138945716 is about 11787.5237433483. The cubic root of 138945716 is about 517.9427047137.

The spelling of 138945716 in words is "one hundred thirty-eight million, nine hundred forty-five thousand, seven hundred sixteen".