2591819 has 2 divisors, whose sum is σ = 2591820. Its totient is φ = 2591818.

The previous prime is 2591807. The next prime is 2591821. The reversal of 2591819 is 9181952.

2591819 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2591819 is a prime.

It is a super-2 number, since 2×2591819² = 13435051457522, which contains 22 as substring.

Together with 2591821, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2591839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1295909 + 1295910.

It is an arithmetic number, because the mean of its divisors is an integer number (1295910).

2^2591819 is an apocalyptic number.

2591819 is a deficient number, since it is larger than the sum of its proper divisors (1).

2591819 is an equidigital number, since it uses as much as digits as its factorization.

2591819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6480, while the sum is 35.

The square root of 2591819 is about 1609.9127305541. The cubic root of 2591819 is about 137.3625116048.

The spelling of 2591819 in words is "two million, five hundred ninety-one thousand, eight hundred nineteen".