138038467 has 4 divisors (see below), whose sum is σ = 157758256. Its totient is φ = 118318680.

The previous prime is 138038441. The next prime is 138038489. The reversal of 138038467 is 764830831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 764830831 = 239 ⋅3200129.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138038467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138038497) 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, 9859884 + ... + 9859897.

It is an arithmetic number, because the mean of its divisors is an integer number (39439564).

Almost surely, 2^138038467 is an apocalyptic number.

138038467 is a deficient number, since it is larger than the sum of its proper divisors (19719789).

138038467 is an equidigital number, since it uses as much as digits as its factorization.

138038467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19719788.

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 138038467 is about 11748.9772746397. The cubic root of 138038467 is about 516.8129362259.

The spelling of 138038467 in words is "one hundred thirty-eight million, thirty-eight thousand, four hundred sixty-seven".