10001819 has 2 divisors, whose sum is σ = 10001820. Its totient is φ = 10001818.

The previous prime is 10001813. The next prime is 10001821. The reversal of 10001819 is 91810001.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10001819 is a prime.

It is a super-2 number, since 2×10001819² = 200072766617522, which contains 22 as substring.

Together with 10001821, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10001819.

It is not a weakly prime, because it can be changed into another prime (10001813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5000909 + 5000910.

It is an arithmetic number, because the mean of its divisors is an integer number (5000910).

Almost surely, 2^10001819 is an apocalyptic number.

10001819 is a deficient number, since it is larger than the sum of its proper divisors (1).

10001819 is an equidigital number, since it uses as much as digits as its factorization.

10001819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72, while the sum is 20.

The square root of 10001819 is about 3162.5652562437. The cubic root of 10001819 is about 215.4565312669.

The spelling of 10001819 in words is "ten million, one thousand, eight hundred nineteen".