138167371 has 4 divisors (see below), whose sum is σ = 144174672. Its totient is φ = 132160072.

The previous prime is 138167363. The next prime is 138167387. The reversal of 138167371 is 173761831.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 138167371 - 2³ = 138167363 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 138167371.

It is not an unprimeable number, because it can be changed into a prime (138167671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3003616 + ... + 3003661.

It is an arithmetic number, because the mean of its divisors is an integer number (36043668).

Almost surely, 2^138167371 is an apocalyptic number.

138167371 is a deficient number, since it is larger than the sum of its proper divisors (6007301).

138167371 is an equidigital number, since it uses as much as digits as its factorization.

138167371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6007300.

The product of its digits is 21168, while the sum is 37.

The square root of 138167371 is about 11754.4617486298. The cubic root of 138167371 is about 516.9737574085.

The spelling of 138167371 in words is "one hundred thirty-eight million, one hundred sixty-seven thousand, three hundred seventy-one".