2188138713 has 4 divisors (see below), whose sum is σ = 2917518288. Its totient is φ = 1458759140.

The previous prime is 2188138699. The next prime is 2188138763. The reversal of 2188138713 is 3178318812.

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 2188138713 - 2¹³ = 2188130521 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2188138763) 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, 364689783 + ... + 364689788.

It is an arithmetic number, because the mean of its divisors is an integer number (729379572).

Almost surely, 2^2188138713 is an apocalyptic number.

It is an amenable number.

2188138713 is a deficient number, since it is larger than the sum of its proper divisors (729379575).

2188138713 is an equidigital number, since it uses as much as digits as its factorization.

2188138713 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729379574.

The product of its digits is 64512, while the sum is 42.

The square root of 2188138713 is about 46777.5449655067. The cubic root of 2188138713 is about 1298.2498565389.

The spelling of 2188138713 in words is "two billion, one hundred eighty-eight million, one hundred thirty-eight thousand, seven hundred thirteen".