138143361 has 8 divisors (see below), whose sum is σ = 185641984. Its totient is φ = 91370160.

The previous prime is 138143339. The next prime is 138143393. The reversal of 138143361 is 163341831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 138143361 - 2⁵ = 138143329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138143321) 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, 180910 + ... + 181671.

It is an arithmetic number, because the mean of its divisors is an integer number (23205248).

Almost surely, 2^138143361 is an apocalyptic number.

It is an amenable number.

138143361 is a deficient number, since it is larger than the sum of its proper divisors (47498623).

138143361 is a wasteful number, since it uses less digits than its factorization.

138143361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362711.

The product of its digits is 5184, while the sum is 30.

The square root of 138143361 is about 11753.4403899454. The cubic root of 138143361 is about 516.9438100124.

The spelling of 138143361 in words is "one hundred thirty-eight million, one hundred forty-three thousand, three hundred sixty-one".