2138320559 has 4 divisors (see below), whose sum is σ = 2138535504. Its totient is φ = 2138105616.

The previous prime is 2138320531. The next prime is 2138320579. The reversal of 2138320559 is 9550238312.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2138320559 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2138320579) 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, 91787 + ... + 112700.

It is an arithmetic number, because the mean of its divisors is an integer number (534633876).

Almost surely, 2^2138320559 is an apocalyptic number.

2138320559 is a deficient number, since it is larger than the sum of its proper divisors (214945).

2138320559 is a wasteful number, since it uses less digits than its factorization.

2138320559 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214944.

The product of its (nonzero) digits is 64800, while the sum is 38.

The square root of 2138320559 is about 46241.9783205693. The cubic root of 2138320559 is about 1288.3215474135.

The spelling of 2138320559 in words is "two billion, one hundred thirty-eight million, three hundred twenty thousand, five hundred fifty-nine".