2091638119 has 2 divisors, whose sum is σ = 2091638120. Its totient is φ = 2091638118.

The previous prime is 2091638117. The next prime is 2091638141. The reversal of 2091638119 is 9118361902.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2091638119 - 2¹ = 2091638117 is a prime.

It is a super-2 number, since 2×2091638119² = 8749900041707716322, which contains 22 as substring.

Together with 2091638117, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2091638113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1045819059 + 1045819060.

It is an arithmetic number, because the mean of its divisors is an integer number (1045819060).

Almost surely, 2^2091638119 is an apocalyptic number.

2091638119 is a deficient number, since it is larger than the sum of its proper divisors (1).

2091638119 is an equidigital number, since it uses as much as digits as its factorization.

2091638119 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 2091638119 is about 45734.4303452005. The cubic root of 2091638119 is about 1278.8772134442.

The spelling of 2091638119 in words is "two billion, ninety-one million, six hundred thirty-eight thousand, one hundred nineteen".