138334529 has 4 divisors (see below), whose sum is σ = 138371376. Its totient is φ = 138297684.

The previous prime is 138334429. The next prime is 138334541. The reversal of 138334529 is 925433831.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 138334529 - 2¹⁶ = 138268993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 138334492 and 138334501.

It is not an unprimeable number, because it can be changed into a prime (138334589) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12059 + ... + 20544.

It is an arithmetic number, because the mean of its divisors is an integer number (34592844).

Almost surely, 2^138334529 is an apocalyptic number.

It is an amenable number.

138334529 is a deficient number, since it is larger than the sum of its proper divisors (36847).

138334529 is an equidigital number, since it uses as much as digits as its factorization.

138334529 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36846.

The product of its digits is 77760, while the sum is 38.

The square root of 138334529 is about 11761.5700057433. The cubic root of 138334529 is about 517.1821555579.

The spelling of 138334529 in words is "one hundred thirty-eight million, three hundred thirty-four thousand, five hundred twenty-nine".