2113887859 has 2 divisors, whose sum is σ = 2113887860. Its totient is φ = 2113887858.

The previous prime is 2113887857. The next prime is 2113887863. The reversal of 2113887859 is 9587883112.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2113887859 - 2¹ = 2113887857 is a prime.

Together with 2113887857, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2113887857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056943929 + 1056943930.

It is an arithmetic number, because the mean of its divisors is an integer number (1056943930).

Almost surely, 2^2113887859 is an apocalyptic number.

2113887859 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113887859 is an equidigital number, since it uses as much as digits as its factorization.

2113887859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 967680, while the sum is 52.

The square root of 2113887859 is about 45977.0362137448. The cubic root of 2113887859 is about 1283.3959017713.

The spelling of 2113887859 in words is "two billion, one hundred thirteen million, eight hundred eighty-seven thousand, eight hundred fifty-nine".