2113819 has 2 divisors, whose sum is σ = 2113820. Its totient is φ = 2113818.

The previous prime is 2113801. The next prime is 2113823. The reversal of 2113819 is 9183112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2113819 - 2¹¹ = 2111771 is a prime.

It is a super-2 number, since 2×2113819² = 8936461529522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2113793 and 2113802.

It is not a weakly prime, because it can be changed into another prime (2113879) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1056909 + 1056910.

It is an arithmetic number, because the mean of its divisors is an integer number (1056910).

2^2113819 is an apocalyptic number.

2113819 is a deficient number, since it is larger than the sum of its proper divisors (1).

2113819 is an equidigital number, since it uses as much as digits as its factorization.

2113819 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 432, while the sum is 25.

The square root of 2113819 is about 1453.8978643632. The cubic root of 2113819 is about 128.3381966261.

The spelling of 2113819 in words is "two million, one hundred thirteen thousand, eight hundred nineteen".