2091597019 has 2 divisors, whose sum is σ = 2091597020. Its totient is φ = 2091597018.

The previous prime is 2091596999. The next prime is 2091597029. The reversal of 2091597019 is 9107951902.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2091597019 - 2⁵ = 2091596987 is a prime.

It is a super-2 number, since 2×2091597019² = 8749556179779372722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2091597029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1045798509 + 1045798510.

It is an arithmetic number, because the mean of its divisors is an integer number (1045798510).

Almost surely, 2^2091597019 is an apocalyptic number.

2091597019 is a deficient number, since it is larger than the sum of its proper divisors (1).

2091597019 is an equidigital number, since it uses as much as digits as its factorization.

2091597019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51030, while the sum is 43.

The square root of 2091597019 is about 45733.9810097481. The cubic root of 2091597019 is about 1278.8688368840.

The spelling of 2091597019 in words is "two billion, ninety-one million, five hundred ninety-seven thousand, nineteen".