2118799 has 2 divisors, whose sum is σ = 2118800. Its totient is φ = 2118798.

The previous prime is 2118791. The next prime is 2118803. The reversal of 2118799 is 9978112.

2118799 = T₁₁₈₇ + T₁₁₈₈ + T₁₁₈₉.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2118799 - 2³ = 2118791 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2118791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1059399 + 1059400.

It is an arithmetic number, because the mean of its divisors is an integer number (1059400).

2^2118799 is an apocalyptic number.

2118799 is the 1189-th centered triangular number.

2118799 is a deficient number, since it is larger than the sum of its proper divisors (1).

2118799 is an equidigital number, since it uses as much as digits as its factorization.

2118799 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 37.

The square root of 2118799 is about 1455.6094943356. The cubic root of 2118799 is about 128.4389026571.

The spelling of 2118799 in words is "two million, one hundred eighteen thousand, seven hundred ninety-nine".