138114665 has 8 divisors (see below), whose sum is σ = 178486728. Its totient is φ = 101992320.

The previous prime is 138114649. The next prime is 138114677. The reversal of 138114665 is 566411831.

It can be written as a sum of positive squares in 4 ways, for example, as 6416089 + 131698576 = 2533^2 + 11476^2 .

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

It is not a de Polignac number, because 138114665 - 2⁴ = 138114649 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1062356 + ... + 1062485.

It is an arithmetic number, because the mean of its divisors is an integer number (22310841).

Almost surely, 2^138114665 is an apocalyptic number.

It is an amenable number.

138114665 is a deficient number, since it is larger than the sum of its proper divisors (40372063).

138114665 is a wasteful number, since it uses less digits than its factorization.

138114665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2124859.

The product of its digits is 17280, while the sum is 35.

The square root of 138114665 is about 11752.2195775947. The cubic root of 138114665 is about 516.9080132702.

The spelling of 138114665 in words is "one hundred thirty-eight million, one hundred fourteen thousand, six hundred sixty-five".