2119381889 has 2 divisors, whose sum is σ = 2119381890. Its totient is φ = 2119381888.

The previous prime is 2119381841. The next prime is 2119381931. The reversal of 2119381889 is 9881839112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2110483600 + 8898289 = 45940^2 + 2983^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2119381889 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2119381819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1059690944 + 1059690945.

It is an arithmetic number, because the mean of its divisors is an integer number (1059690945).

Almost surely, 2^2119381889 is an apocalyptic number.

It is an amenable number.

2119381889 is a deficient number, since it is larger than the sum of its proper divisors (1).

2119381889 is an equidigital number, since it uses as much as digits as its factorization.

2119381889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 248832, while the sum is 50.

The square root of 2119381889 is about 46036.7449870210. The cubic root of 2119381889 is about 1284.5067957404.

The spelling of 2119381889 in words is "two billion, one hundred nineteen million, three hundred eighty-one thousand, eight hundred eighty-nine".