2381999 has 2 divisors, whose sum is σ = 2382000. Its totient is φ = 2381998.

The previous prime is 2381983. The next prime is 2382001. The reversal of 2381999 is 9991832.

2381999 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 not a de Polignac number, because 2381999 - 2⁴ = 2381983 is a prime.

Together with 2382001, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2381909) 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, 1190999 + 1191000.

It is an arithmetic number, because the mean of its divisors is an integer number (1191000).

2^2381999 is an apocalyptic number.

2381999 is a deficient number, since it is larger than the sum of its proper divisors (1).

2381999 is an equidigital number, since it uses as much as digits as its factorization.

2381999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34992, while the sum is 41.

The square root of 2381999 is about 1543.3726056918. The cubic root of 2381999 is about 133.5510145571.

The spelling of 2381999 in words is "two million, three hundred eighty-one thousand, nine hundred ninety-nine".