2138063689 has 4 divisors (see below), whose sum is σ = 2138195920. Its totient is φ = 2137931460.

The previous prime is 2138063659. The next prime is 2138063713. The reversal of 2138063689 is 9863608312.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2138063689 - 2⁷ = 2138063561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2138063659) 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, 37827 + ... + 75544.

It is an arithmetic number, because the mean of its divisors is an integer number (534548980).

Almost surely, 2^2138063689 is an apocalyptic number.

It is an amenable number.

2138063689 is a deficient number, since it is larger than the sum of its proper divisors (132231).

2138063689 is a wasteful number, since it uses less digits than its factorization.

2138063689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132230.

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 2138063689 is about 46239.2007824530. The cubic root of 2138063689 is about 1288.2699579537.

The spelling of 2138063689 in words is "two billion, one hundred thirty-eight million, sixty-three thousand, six hundred eighty-nine".