2185188479 has 2 divisors, whose sum is σ = 2185188480. Its totient is φ = 2185188478.

The previous prime is 2185188389. The next prime is 2185188527. The reversal of 2185188479 is 9748815812.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2185188479 - 2²⁴ = 2168411263 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2185188479.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2185188079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1092594239 + 1092594240.

It is an arithmetic number, because the mean of its divisors is an integer number (1092594240).

Almost surely, 2^2185188479 is an apocalyptic number.

2185188479 is a deficient number, since it is larger than the sum of its proper divisors (1).

2185188479 is an equidigital number, since it uses as much as digits as its factorization.

2185188479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1290240, while the sum is 53.

The square root of 2185188479 is about 46745.9996042442. Note that the first 3 decimals coincide. The cubic root of 2185188479 is about 1297.6661239647. Note that the first 3 decimals are identical.

The spelling of 2185188479 in words is "two billion, one hundred eighty-five million, one hundred eighty-eight thousand, four hundred seventy-nine".