138384811 has 8 divisors (see below), whose sum is σ = 146973744. Its totient is φ = 129845760.

The previous prime is 138384803. The next prime is 138384823. The reversal of 138384811 is 118483831.

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

It is a cyclic number.

It is not a de Polignac number, because 138384811 - 2³ = 138384803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138384871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6670 + ... + 17923.

It is an arithmetic number, because the mean of its divisors is an integer number (18371718).

Almost surely, 2^138384811 is an apocalyptic number.

138384811 is a deficient number, since it is larger than the sum of its proper divisors (8588933).

138384811 is a wasteful number, since it uses less digits than its factorization.

138384811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24941.

The product of its digits is 18432, while the sum is 37.

The square root of 138384811 is about 11763.7073663025. The cubic root of 138384811 is about 517.2448099634.

The spelling of 138384811 in words is "one hundred thirty-eight million, three hundred eighty-four thousand, eight hundred eleven".