138752911 has 8 divisors (see below), whose sum is σ = 152153424. Its totient is φ = 125483520.

The previous prime is 138752909. The next prime is 138752917. The reversal of 138752911 is 119257831.

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

It is a cyclic number.

It is not a de Polignac number, because 138752911 - 2¹ = 138752909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138752917) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 30556 + ... + 34801.

It is an arithmetic number, because the mean of its divisors is an integer number (19019178).

Almost surely, 2^138752911 is an apocalyptic number.

138752911 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

138752911 is a deficient number, since it is larger than the sum of its proper divisors (13400513).

138752911 is a wasteful number, since it uses less digits than its factorization.

138752911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65561.

The product of its digits is 15120, while the sum is 37.

The square root of 138752911 is about 11779.3425538100. The cubic root of 138752911 is about 517.7030231745.

The spelling of 138752911 in words is "one hundred thirty-eight million, seven hundred fifty-two thousand, nine hundred eleven".