2188528379 has 2 divisors, whose sum is σ = 2188528380. Its totient is φ = 2188528378.

The previous prime is 2188528367. The next prime is 2188528403. The reversal of 2188528379 is 9738258812.

It is a happy number.

2188528379 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2188528379 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2188528379.

It is not a weakly prime, because it can be changed into another prime (2188528339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1094264189 + 1094264190.

It is an arithmetic number, because the mean of its divisors is an integer number (1094264190).

Almost surely, 2^2188528379 is an apocalyptic number.

2188528379 is a deficient number, since it is larger than the sum of its proper divisors (1).

2188528379 is an equidigital number, since it uses as much as digits as its factorization.

2188528379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1935360, while the sum is 53.

The square root of 2188528379 is about 46781.7098768311. The cubic root of 2188528379 is about 1298.3269165229.

The spelling of 2188528379 in words is "two billion, one hundred eighty-eight million, five hundred twenty-eight thousand, three hundred seventy-nine".