138652829 has 8 divisors (see below), whose sum is σ = 158594688. Its totient is φ = 118744560.

The previous prime is 138652793. The next prime is 138652831. The reversal of 138652829 is 928256831.

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 138652829 - 2²⁰ = 137604253 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 138652829.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138652849) 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, 1184 + ... + 16694.

It is an arithmetic number, because the mean of its divisors is an integer number (19824336).

Almost surely, 2^138652829 is an apocalyptic number.

It is an amenable number.

138652829 is a deficient number, since it is larger than the sum of its proper divisors (19941859).

138652829 is a wasteful number, since it uses less digits than its factorization.

138652829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16795.

The product of its digits is 207360, while the sum is 44.

The square root of 138652829 is about 11775.0935877385. The cubic root of 138652829 is about 517.5785207621.

The spelling of 138652829 in words is "one hundred thirty-eight million, six hundred fifty-two thousand, eight hundred twenty-nine".