138165711 has 8 divisors (see below), whose sum is σ = 184955904. Its totient is φ = 91743000.

The previous prime is 138165697. The next prime is 138165719. The reversal of 138165711 is 117561831.

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

It is not a de Polignac number, because 138165711 - 2⁹ = 138165199 is a prime.

It is a super-2 number, since 2×138165711² = 38179527392271042, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138165719) 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, 90991 + ... + 92496.

It is an arithmetic number, because the mean of its divisors is an integer number (23119488).

Almost surely, 2^138165711 is an apocalyptic number.

138165711 is a deficient number, since it is larger than the sum of its proper divisors (46790193).

138165711 is a wasteful number, since it uses less digits than its factorization.

138165711 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183741.

The product of its digits is 5040, while the sum is 33.

The square root of 138165711 is about 11754.3911369326. The cubic root of 138165711 is about 516.9716870213.

The spelling of 138165711 in words is "one hundred thirty-eight million, one hundred sixty-five thousand, seven hundred eleven".