2091619159 has 4 divisors (see below), whose sum is σ = 2390421904. Its totient is φ = 1792816416.

The previous prime is 2091619133. The next prime is 2091619181. The reversal of 2091619159 is 9519161902.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2091619159 - 2⁷ = 2091619031 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2091619109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149401362 + ... + 149401375.

It is an arithmetic number, because the mean of its divisors is an integer number (597605476).

Almost surely, 2^2091619159 is an apocalyptic number.

2091619159 is a deficient number, since it is larger than the sum of its proper divisors (298802745).

2091619159 is an equidigital number, since it uses as much as digits as its factorization.

2091619159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298802744.

The product of its (nonzero) digits is 43740, while the sum is 43.

The square root of 2091619159 is about 45734.2230610732. The cubic root of 2091619159 is about 1278.8733492344.

The spelling of 2091619159 in words is "two billion, ninety-one million, six hundred nineteen thousand, one hundred fifty-nine".