138211169 has 8 divisors (see below), whose sum is σ = 142129728. Its totient is φ = 134302320.

The previous prime is 138211147. The next prime is 138211181. The reversal of 138211169 is 961112831.

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 138211169 - 2⁸ = 138210913 is a prime.

It is a super-2 number, since 2×138211169² = 38204654472693122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (138211109) 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, 34004 + ... + 37850.

It is an arithmetic number, because the mean of its divisors is an integer number (17766216).

Almost surely, 2^138211169 is an apocalyptic number.

It is an amenable number.

138211169 is a deficient number, since it is larger than the sum of its proper divisors (3918559).

138211169 is an equidigital number, since it uses as much as digits as its factorization.

138211169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4855.

The product of its digits is 2592, while the sum is 32.

The square root of 138211169 is about 11756.3246382532. The cubic root of 138211169 is about 517.0283772134.

The spelling of 138211169 in words is "one hundred thirty-eight million, two hundred eleven thousand, one hundred sixty-nine".