138171467 has 16 divisors (see below), whose sum is σ = 161160192. Its totient is φ = 116017440.

The previous prime is 138171413. The next prime is 138171491. The reversal of 138171467 is 764171831.

It is a happy number.

It is not a de Polignac number, because 138171467 - 2⁶ = 138171403 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 138171467.

It is not an unprimeable number, because it can be changed into a prime (138171497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85178 + ... + 86784.

It is an arithmetic number, because the mean of its divisors is an integer number (10072512).

Almost surely, 2^138171467 is an apocalyptic number.

138171467 is a deficient number, since it is larger than the sum of its proper divisors (22988725).

138171467 is a wasteful number, since it uses less digits than its factorization.

138171467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1858.

The product of its digits is 28224, while the sum is 38.

The square root of 138171467 is about 11754.6359790510. The cubic root of 138171467 is about 516.9788659556.

The spelling of 138171467 in words is "one hundred thirty-eight million, one hundred seventy-one thousand, four hundred sixty-seven".